Section 2 of the Board’s Arbitration Code, rule G-35, requires all dealers to submit to arbitration at the instance of a customer or another dealer. From time to time, a dealer will refuse to submit to arbitration or will delay or even refuse to make payment of an award. Such acts constitute violations of rule G-35. The Board believes that it is a violation of rule G-17, on fair dealing, for a broker, dealer or municipal securities dealer or its associated persons to fail to submit to arbitration as required by Rule G-35, or to fail to comply with the procedures therein, including the production of documents, or to fail to honor an award of arbitrators unless a timely motion to vacate the award has been made according to applicable law.[1]

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[1] A party typically has 90 days to seek judicial review of an arbitration award; after that the award cannot be challenged. Challenges to arbitration awards are heard only in limited, egregious circumstances such as fraud or collusion on the part of the arbitrators.

Disclosure of pricing: calculating the dollar price of partially prerefunded bonds. This is in response to your March 21, 1986 letter concerning the application of Board rules to the description of municipal securities provided at or prior to the time of trade and the application of rules G-12(c) and G-15(a) on calculating the dollar price of partially prerefunded bonds with mandatory sinking fund calls.

You describe an issue, due 10/1/13. Mandatory sinking fund calls for this issue begin 10/1/05 and end 10/1/13. Recently, a partial refunding took place which prerefunds the 2011, 2012 and 2013 mandatory sinking fund requirements totalling $11,195,000 (which is 43.6% of the issue) to 10/1/94 at 102. The certificate numbers for the partial prerefunding will not be chosen until 30 days prior to the prerefunded date. Thus, a large percentage of the bonds are prerefunded and all the bonds will be redeemed by 10/1/10 because the 2011, 2012, and 2013 maturities no longer exist.

You note that the bonds should be described as partially prerefunded to 10/1/94 with a 10/1/10 maturity. Also, you state that the price of these securities should be calculated to the cheapest call, in this case, the partial prerefunded date of 10/1/94 at 102. You add that there is a 9½ point difference in price between calculating to maturity and to the partially prerefunded date.

You note that the descriptions you have seen on various brokers' wires do not accurately describe these securities and a purchaser of these bonds would not know what they bought if the purchase was based on current descriptions. You ask the Board to address the description and calculation problems posed by this issue.

Your letter was referred to a Committee of the Board which has responsibility for interpreting the Board's fair practice rules. That Committee has authorized this response.

Board rule G-17 provides that

In the conduct of its municipal securities business, each broker, dealer, and municipal securities dealer shall deal fairly with all persons and shall not engage in any deceptive, dishonest, or unfair practice.

In regard to inter-dealer transactions, the items of information that professionals must exchange at or prior to the time of trade are governed by principles of contract law and essentially are those items necessary adequately to describe the security that is the subject of the contract. As a general matter, these items of information do not encompass all material facts, but should be sufficient to distinguish the security from other similar issues. The Board has interpreted rule G-17 to require dealers to treat other dealers fairly and to hold them to the prevailing ethical standards of the industry. [1] The rule also prohibits dealers from knowingly misdescribing securities to another dealer. [2]

Board rules G-12(c) and G-15(a) require that

where a transaction is effected on a yield basis, the dollar price shall be calculated to the lowest of price to call, price to par option, or price to maturity ...

In addition, for customer confirmations, rule G-15(a) requires that

for transactions effected on the basis of dollar price, ... the lowest of the resulting yield to call, yield to par option, or yield to maturity shall be shown....

These provisions also require, in cases in which the resulting dollar price or yield shown on the confirmation is calculated to call or par option, that this must be stated and the call or option date and price used in the calculation must be shown. The Board has determined that, for purposes of making this computation, only "in-whole" calls should be used. [3] This requirement reflects the longstanding practice of the municipal securities industry that a price calculated to an "in-part" call, for example, a partial prerefunding date, is not adequate because, depending on the probability of the call provision being exercised and the portion of the issue subject to the call provision, the effective yield based on the price to a partial prerefunding date may not bear any relation to the likely return on the investment.

These provisions of Rules G-12(c) and G-15(a) apply, however, only when the parties have not specified that the bonds are priced to a specific call date. In some circumstances, the parties to a particular transaction may agree that the transaction is effected on the basis of a yield to a particular date, e.g., a partial prerefunding date, and that the dollar price will be computed in this fashion. If that is the case, the yield to this agreed upon date must be included on confirmations as the yield at which the transaction was effected and the resulting dollar price computed to that date, together with a statement that it is a "yield to [date]." In an August 1979 interpretive notice on pricing of callable securities, the Board stated that, under rule G-30, a dealer pricing securities sold to a customer on the basis of a yield to a specified call feature should take into account the possibility that the call feature may not be exercised. [4]

Accordingly, the price to be paid by the customer should reflect this possibility, and the resulting yield to maturity should bear a reasonable relationship to yields on securities of similar quality and maturity. Failure to price securities in such a manner may constitute a violation of rule G-30 since the price may not be "fair and reasonable" in the event the call feature is not exercised. The Board also noted that the fact that a customer in these circumstances may realize a yield in excess of the yield at which the transaction was effected does not relieve a municipal securities dealer of its responsibilities under rule G-30.

Accordingly, the calculation of the dollar price of a transaction in the securities you describe, unless the parties have agreed otherwise, should be made to the lowest of price to the first in-whole call, par option, or maturity. While the partial prerefunding effectively redeems the issue by 10/1/10, the stated maturity of the bond is 10/1/13 and, subject to the parties agreeing to price to 10/1/10, the stated maturity date should be used. MSRB interpretation of May 15, 1986.

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[1] In addition, the Board has interpreted this rule to require that, in connection with the purchase from or sale of a municipal security to a customer, at or before execution of the transaction, a dealer must disclose all material facts concerning the transaction which could affect the customer's investment decision, including a complete description of the security, and not omit any material facts which would render other statements misleading.

[2] While the Board does not have any specific disclosure requirements applicable to dealers at the time of trade, a dealer is free to disclose any unique aspect of an issue. For example, in the issue described above, a dealer may decide to disclose the "effective" maturity date of 2010, as well as the stated maturity date of 2013.

[3] See [Rule G-15 Interpretation - Notice Concerning Pricing to Call], December 10, 1980 ... at ¶ 3571.

[4] See [Rule G-30 Interpretation - Interpretive Notice on Pricing of Callable Securities] August 10, 1979 ... at ¶ 3646.

Description provided at or prior to the time of trade. This is in response to your February 27, 1986 letter and our prior telephone conversation concerning the application of Board rules to the description of municipal securities exchanged at or prior to the time of trade. You note that it is becoming more and more common in the municipal securities secondary market for sellers, both dealers and customers, to provide only a “limited description” and CUSIP number for bonds being sold. Recently you were asked by a customer to bid on $4 million of bonds and were given the coupon, maturity date, and issuer. When you asked for more information, you were given the CUSIP number. You then bid on and purchased the bonds. After the bonds were confirmed, you discovered  that the bonds were callable and that, when these bonds first came to market, they were priced to the call. You state that the seller was aware that the bonds were callable.

Your letter was referred to a Committee of the Board which has responsibility for interpreting the Board’s fair practice rules. That Committee has authorized this response.

Board rule G-17 provides that

In the conduct of its municipal securities business, each broker, dealer, and municipal securities dealer shall deal fairly with all persons and shall not engage in any deceptive, dishonest, or unfair practice. (emphasis added)

The Board has interpreted this rule to require that, in connection with the purchase from or sale of a municipal security to a customer, at or before execution of the transaction, a dealer must disclose all material facts concerning the transaction which could affect the customer’s investment decision and not omit any material facts which would render other statements misleading. The fact that a municipal security may be redeemed in-whole, in-part, or in extraordinary circumstances prior to maturity is essential to a customer’s investment decision and is one of the facts a dealer must disclose.

I note from our telephone conversation that you ask whether Board rules specify what information a customer must disclose to a dealer at the time it solicits bids to buy municipal securities. Customers are not subject to the Board’s rules, and no specific disclosure rules would apply to customers beyond the application of the anti-fraud provisions of the federal securities laws. I note, however, that a municipal securities professional buying securities from a customer should obtain sufficient information about the securities so that it can accurately describe these securities when the dealer reintroduces them into the market.

In regard to inter-dealer transactions, the items of information that professionals must exchange at or prior to the time of trade are governed by principles of contract law and essentially are those items necessary adequately to describe the security that is the subject of the contract. As a general matter, these items of information may not encompass all material facts, but must be sufficient to distinguish the security from other similar issues. The Board has interpreted rule G-17 to require dealers to treat other dealers fairly and to hold them to the prevailing ethical standards of the industry. Also, dealers may not knowingly misdescribe securities to another dealer. MSRB interpretation of April 30, 1986.

The Board has received a number of inquiries from municipal securities brokers and dealers regarding the application of the Board’s rules to transactions in put option bonds. Put option or tender option bonds on new issue securities are obligations which grant the bondholder the right to require the issuer (or a specified third party acting as agent for the issuer), after giving required notice, to purchase the bonds, usually at par (the "strike price"), at a certain time or times prior to maturity (the "expiration date(s)") or upon the occurrence of specified events or conditions. Put options on secondary market securities also are coming into prominence. These instruments are issued by financial institutions and permit the purchaser to sell, after giving required notice, a specified amount of securities from a specified issue to the financial institution on certain expiration dates at the strike price. Put options generally are backed by letters of credit. Secondary market put options often are sold as an attachment to the security, and subsequently are transferred with that security. Frequently, however, the put option may be sold separately from that security and re-attached to other securities from the same issue.

Of course, the Board’s rules apply to put option bonds just as they apply to all other municipal securities. The Board, however, has issued a number of interpretive letters on the specific application of its rules to these types of bonds. These interpretive positions are reviewed below.

Fair Practice Rules

1. Rule G-17

Board rule G-17, regarding fair dealing, imposes an obligation on persons selling put option bonds to customers to disclose adequately all material information concerning these securities and the put features at the time of trade. In an interpretive letter on this issue,[1] the Board responded to the question whether a dealer who had previously sold put option securities to a customer would be obligated to contact that customer around the time the put option comes into effect to remind the customer that the put option is available. The Board stated that no Board rule would impose such an obligation on the dealer.

In addition, the Board was asked whether a dealer who purchased from a customer securities with a put option feature at the time of the put option exercise date at a price significantly below the put exercise price would be in violation of any Board rules. The Board responded that such dealer may well be deemed to be in violation of Board rules G-17 on fair dealing and G-30 on prices and commissions.

2. Rule G-25(b)

Board rule G-25(b) prohibits brokers, dealers, and municipal securities dealers from guaranteeing or offering to guarantee a customer against loss in municipal securities transactions. Under the rule, put options are not deemed to be guarantees against loss if their terms are provided in writing to the customer with or on the confirmation of the transaction and recorded in accordance with rule G-8(a)(v).[2] Thus, when a municipal securities dealer is the issuer of a secondary market put option on a municipal security, the terms of the put option must be included with or on customer confirmations of transactions in the underlying security. Dealers that sell bonds subject to put options issued by an entity other than the dealer would not be subject to this disclosure requirement.

Confirmation Disclosure Rules

1. Description of Security

Rules G-12(c)(v)(E) and G-15(a)(i)(E)[*] require inter-dealer and customer confirmations to set forth

a description of the securities, including… if the securities are… subject to redemption prior to maturity, an indication to such effect.

Confirmations of transactions in put option securities, therefore, would have to indicate the existence of the put option (e.g., by including the designation "puttable" on the confirmation), much as confirmations concerning callable securities must indicate the existence of the call feature. The confirmation need not set forth the specific details of the put option feature.[3]

Rules G-12(c)(v)(E) and G-15(a)(i)(E)[†] also require confirmations to contain

a description of the securities including at a minimum… if necessary for a materially complete description of the securities, the name of any company or other person in addition to the issuer obligated, directly or indirectly, with respect to debt service…

The Board has stated that a bank issuing a letter of credit which secures a put option feature on an issue is "obligated… with respect to debt service" on such issue. Thus, the identity of the bank issuing the letter of credit securing the put option also must be indicated on the confirmation.[4]

Finally, rules G-12(c)(v)(E) and G-15(a)(i)(E)[‡] requires that dealer and customer confirmations contain a description of the securities including, among other things, the interest rate on the bonds. The Board has interpreted this provision as it pertains to certain tender option bonds with adjustable tender fees to require that the net interest rate (i.e., the current effective interest rate taking into account the tender fee) be disclosed in the interest rate field and that dealers include elsewhere in the description field of the confirmation the stated interest rate with the phrase "less fee for put."[5]

2. Yield Disclosure

Board rule G-12(c)(v)(I) requires that inter-dealer confirmations include the

yield at which transaction was effected and resulting dollar price, except in the case of securities which are traded on the basis of dollar price or securities sold at par, in which event only dollar price need be shown (in cases in which securities are priced to call or to par option, this must be stated and the call or option date and price used in the calculation must be shown, and where a transaction is effected on a yield basis, the dollar price shall be calculated to the lowest of price to call, price to par option, or price to maturity);

Rule G-15(a)(i)(I)[#] requires that customer confirmations include information on yield and dollar price as follows:

(1) for transactions effected on a yield basis, the yield at which transaction was effected and the resulting dollar price shall be shown. Such dollar price shall be calculated to the lowest of price to call, price to par option, or price to maturity.

(2) for transactions effected on the basis of dollar price, the dollar price at which transaction was effected, and the lowest of the resulting yield to call, yield to par option, or yield to maturity shall be shown.

(3) for transactions at par, the dollar price shall be shown.

In cases in which the resulting dollar price or yield shown on the confirmation is calculated to call or par option, this must be stated, and the call or option date and price used in the calculation must be shown.

Neither of these rules requires the presentation of a yield or a dollar price computed to the put option date as a part of the standard confirmation process. In many circumstances, however, the parties to a particular transaction may agree that the transaction is effected on the basis of a yield to the put option date, and that the dollar price will be computed in this fashion. If that is the case, the yield to the put date must be included on confirmations as the yield at which the transaction was effected and the resulting dollar price computed to the put date, together with a statement that it is a "yield to the [date] put option" and an indication of the date the option first becomes available to the holder.[6] The requirement for transactions effected on a yield basis of pricing to the lowest of price to call, price to par option or price to maturity, applies only when the parties have not specified the yield on which the transaction is based.

In addition, in regard to transactions in tender option bonds with adjustable tender fees, even if the transaction is not effected on the basis of a yield to the tender date, dealers must include the yield to the tender date since an accurate yield to maturity cannot be calculated for these securities because of the yearly adjustment in tender fees.[7]

Delivery Requirements

In a recent interpretive letter, the Board responded to an inquiry whether, in three situations, the delivery of securities subject to put options could be rejected.[8] The Board responded that, in the first situation in which securities subject to a "one time only" put option were purchased for settlement prior to the option expiration date but delivered after the option expiration date, such delivery could be rejected since the securities delivered were no longer "puttable" securities. In the second situation in which securities subject to a "one time only" put option were purchased for settlement prior to the option expiration date and delivered prior to that date, but too late to permit the recipient to satisfy the conditions under which it could exercise the option (e.g., the trustee is located too far away for the recipient to be able to present the physical securities by the expiration date), the Board stated that there might not be a basis for rejecting delivery, since the bonds delivered were "puttable" bonds, depending on the facts and circumstances of the delivery. A purchasing dealer who believed that it had incurred some loss as a result of the delivery would have to seek redress in an arbitration proceeding.

Finally, in the third situation, securities which were the subject of a put option exercisable on a stated periodic basis (e.g., annually) were purchased for settlement prior to the annual exercise date so that the recipient was unable to exercise the option at the time it anticipated being able to do so. The Board stated that this delivery could not be rejected since "puttable" bonds were delivered. A purchasing dealer who believed that it had incurred some loss as a result of the delivery would have to seek redress in an arbitration proceeding.

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[1] See [Rule G-17 Interpretive Letter - Put option bonds: safekeeping, pricing,] MSRB interpretation of February 18, 1983.

[2] Rule G-8(a)(v) requires dealers to record, among other things, oral or written put options with respect to municipal securities in which such municipal securities broker or dealer has any direct or indirect interest, showing the description and aggregate par value of the securities and the terms and conditions of the option.

[3] See [Rule G-12 Interpretive Letter - Confirmation disclosure: put option bonds,] MSRB interpretation of April 24, 1981.

[4] See [Rule G-15 Interpretive Letter - Securities description: securities backed by letters of credit,] MSRB interpretation of December 2, 1982.

[5] See [Rule G-12 Interpretive Letter - Confirmation disclosure: tender option bonds with adjustable tender fees,] MSRB interpretation of March 5, 1985.

[6] See [Rule G-12 Interpretive Letter - Confirmation disclosure: put option bonds,] MSRB interpretation of April 24, 1981.

[7] See fn. 5.

[8] See [Rule G-12 Interpretive Letter - Delivery requirements: put option bonds,] MSRB interpretation of February 27, 1985.

[*] [Currently codified at rule G-15(a)(i)(C)(2)(a). See also current rule G-15(a)(i)(C)(2)(b).]

[†] [Currently codified at rule G-15(a)(i)(C)(1)(b).]

[‡] [Currently codified at rule G-15(a)(i)(B)(4). See also current rule G-15(a)(i)(B)(4)(c).]

[#] [Currently codified at rule G-15(a)(i)(A)(5). See also current rule G-15(a)(i)(A)(5)(c)(vi)(D).]

The Board has received inquiries concerning situations in which syndicate managers charge fees for designated sales that do not appear to be actual expenses incurred on behalf of the syndicate or may appear to be excessive in amount. For example, one commentator has described a situation in which the syndicate managers charge $.25 to $.40 per bond as expenses on designated sales and has suggested that such a charge seems to bear no relation to the actual out-of-pocket costs of handling such transactions.

G–17 provides that

In the conduct of its municipal securities business, each broker, dealer, and municipal securities dealer shall deal fairly with all persons and shall not engage in any deceptive, dishonest, or unfair practice.

The Board wishes to emphasize that syndicate managers should take care in determining the actual expenses involved in handling designated sales and may be acting in violation of rule G-17 if the expenses charged to syndicate members bear no relation to or otherwise overstate the actual expenses incurred on behalf of the syndicate.

The Board has received inquiries concerning situations in which a municipal securities dealer alters the settlement date on transactions in "when-issued" securities. In particular, the Board has been made aware of a situation in which a dealer sells a "when-issued" security but accepts the customer’s money prior to the new issue settlement date and specifies on the confirmation for the transaction a settlement date that is weeks before the actual settlement date of the issue. The dealer apparently does this in order to put the customer’s money "to work" as soon as possible. The Board is of the view that this situation is one in which a customer deposits a free credit balance with the dealer and then, using this balance, purchases securities on the actual settlement date. The dealer pays interest on the free credit balance at the same rate as the securities later purchased by the customer.

Rule G-17 provides that

In the conduct of its municipal securities business, each broker, dealer, and municipal securities dealer shall deal fairly with all persons and shall not engage in any deceptive, dishonest, or unfair practice.

The Board believes that this practice would violate rule G-17 if the customer is not advised that the interest received on the free credit balance would probably be taxable. In addition, the Board notes that a dealer that specifies a fictitious settlement date on a confirmation would violate rule G-15(a) which requires that the settlement date be included on customer confirmations.

The Board has received an inquiry concerning a situation in which a municipal securities dealer that is acting as a syndicate manager sells bonds "short" for its own account to the detriment of the syndicate account. In particular, the Board has been made aware of allegations that certain syndicate managers, with knowledge that the syndicate account on a particular new issue of securities is not successful, have sold securities of the new issue "short" for their own accounts and then required syndicate members to take their allotments of unsold bonds. The syndicate managers allegedly have subsequently covered their short positions when the syndicate members attempt to sell their allotments at the lower market price.

Rule G-17, the Board’s fair dealing rule, provides:

In the conduct of its municipal securities business, each broker, dealer, and municipal securities dealer shall deal fairly with all persons and shall not engage in any deceptive, dishonest, or unfair practice.

Syndicate managers act in a fiduciary capacity in relation to syndicate accounts. Therefore they may not use proprietary information about the account obtained solely as a result of acting as manager to their personal advantage over the syndicate’s best interests. The Board is of the view that a syndicate manager that uses information on the status of the syndicate account which is not available to syndicate members to its own benefit and to the detriment of the syndicate account (e.g., by effecting "short sale" transactions for its own account against the interests of other syndicate members) appears to be acting in violation of the fair dealing provisions of rule G-17.

The Board has received inquiries concerning the duty of municipal securities brokers and dealers to allocate partial calls fairly among customer securities held in safekeeping. In particular, it has come to the Board’s attention that certain municipal securities dealers use lottery systems that include only customer positions and exclude the dealer’s proprietary accounts when the call is exercised at a price below the current market value.

The Board recognizes that lottery systems are a proper method of allocating the results of a partial call. Principles of fair dealing require that all such lotteries treat dealer and customer account alike. The Board is of the view that a municipal securities dealer which uses a lottery that excludes the dealer’s proprietary accounts when the call is exercised at a price below the current market value is acting in violation of rule G-17, the Board’s fair dealing rule.[1]

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[1] Rule G-17 provides:

In the conduct of its municipal securities business, each broker, dealer, and municipal securities dealer shall deal fairly with all persons and shall not engage in any deceptive, dishonest, or unfair practice.

From time to time the Board has received inquiries from purchasers of municipal securities concerning the duty of municipal securities brokers and dealers to deliver securities to customers under the Board’s rules. In particular, customers have asked what, if any, remedies are available when long delays occur between the purchase, payment and delivery of municipal securities. The Board has advised such individuals that under rule G-17, the Board’s fair dealing rule, a municipal securities broker or dealer has a duty to deliver securities sold to customers in a prompt fashion.

The Board is mindful that a dealer’s failure to deliver municipal securities often is caused by its failure to receive delivery of the securities from another dealer or by other circumstances beyond its control. It nevertheless believes that a dealer’s duty to deliver securities promptly to customers is inherent in rule G-17.[1] A violation of that duty could occur, for example, if a dealer sells securities to a customer when it knows that it cannot effect delivery by the specified settlement date or within a reasonable length of time thereafter and does not disclose that fact to its customer.

The Board notes that customers who fail to receive securities are not entitled to take advantage of the Board’s procedures to close out a failed transaction which are available only for inter-dealer transactions under rule G-12. However, if a customer sustains a loss or otherwise is damaged by his dealer’s failure to deliver securities, he may seek recovery through the Board’s arbitration program or through litigation. These remedies may accrue to the customer whether or not a dealer’s failure to deliver violates rule G-17.

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[1] The duty of a securities professional to complete promptly transactions with customers also has been found to flow from the federal securities laws by the SEC and the courts.

Put option bonds: safekeeping, pricing. I am writing in response to your recent letter regarding issues of municipal securities with put option or tender option features, under which a holder of the securities may put the securities back to the issuer or an agent of the issuer at par on certain stated dates. In your letter you inquire generally as to the confirmation disclosure requirements applicable to such securities. You also raise several questions regarding a dealer’s obligation to advise customers of the existence of the put option provision at times other than the time of sale of the securities to the customer.

Your letter was referred to a committee of the Board which has responsibility for interpreting the  Board’s confirmation rules, among other matters. That committee has authorized my sending you the following response.

Both rules G-12(c) and G-15, applicable to inter-dealer and customer confirmations respectively, require that confirmations of transactions in securities which are subject to put option or tender option features must indicate that fact (e.g., through inclusion of the designation “puttable” on the confirmation). the date on which the put option feature first comes into effect need be stated on the confirmation only if the transaction is effected on a yield basis and the parties to the transaction specifically agree that the transaction dollar price should be computed to that date. In the absence of such an agreement, the put date need not be stated on the confirmation, and any yield disclosed should be a yield to maturity.

Of course, municipal securities brokers and dealers selling to customers securities with put option or tender option features are obligated to disclose adequately the special characteristics of these securities at the time of trade.  The customer therefore should be advised of information about the put option or tender option feature at this time.

In your letter you inquire whether a dealer who had previously sold securities with a put option or tender option feature to a customer would be obliged to contact that customer around the time the put option comes into effect to remind the customer that the put option is available. You also ask whether such an obligation would exist if the dealer held the securities in safekeeping for the customer. The committee can respond, of course, only in terms of the requirements of Board rules; the committee noted that no Board rule would impose such an obligation on the dealer.

“Wooden tickets.”  This is in response to your letter of February 4, 1981 asking whether the practice of a broker-dealer using “wooden tickets” is prohibited by Board rule G-17. According to your letter, this practice refers to the mailing of confirmations of sales to customers who, in fact, have not placed orders to purchase securities. Thereafter, if any customer objects, stating that it never authorized the transaction, the sale is canceled. You state that, in some cases, customers accept the transaction and make payment.

The Board has determined that the practice by a municipal securities dealer of knowingly issuing confirmations of sales to customers who have not placed orders to purchase the bonds is a deceptive, dishonest, and unfair practice under rule G-17. MSRB interpretation of March 3, 1981.