Callable securities: pricing to call. Your letter dated May 1, 1978 concerning the pricing to call provisions of rules G-12 and G-15 has been referred to me for response. In your letter, you request clarification of the application of such provisions to a situation in which securities have been prerefunded and the escrow fund is to be held to the maturity date of the securities. We understand that the securities in question are part of a term issue, sold on a yield basis, and are subject to a mandatory sinking fund call beginning two years prior to maturity.

Under rules G-12 and G-15, the dollar price of a transaction effected on a yield basis must be calculated to the lowest of price to premium call price to par option or price to maturity. The calculation of dollar price to a premium call or par option date should be to that date at which the issuer may exercise an option to call the whole of a particular issue or, in the case of serial bonds, a particular maturity, and not to the date of a call in part.

Accordingly, the calculation of the dollar price of a transaction in the securities in your example should be made to the maturity date. The existence of the sinking fund call should, however, be disclosed on the confirmation by an indication that the securities are "callable." The fact that the securities are prerefunded should also be noted on the confirmation. MSRB interpretation of June 8, 1978.

Delivery requirements: coupons and coupon checks. This letter is to confirm the substance of conversations you had with the Board’s staff concerning the application of certain provisions of rule G-12, the uniform practice rule, to deliveries of securities bearing past-due coupons. You inquire whether, in the case where a transaction is effected for a settlement date prior to the coupon payment date, a delivery of securities with this past-due coupon attached constitutes "good delivery" for purposes of the rule.

Rule G-12(e)(vii)(C) provides that a seller may, but is not required to, deliver a check in lieu of coupons if delivery is made within thirty calendar days prior to an interest payment date. Thus, in the circumstances you set forth, the seller would have the option to detach the coupons and provide a check, but is under no obligation to do so. A delivery with these coupons still attached would constitute "good delivery," and a rejection of the delivery for this reason would be an improper rejection. MSRB interpretation of March 9, 1978.

Delivery requirements: partials. I am writing to confirm the substance of our telephone conversation concerning the provision of rule G-12(e)(iv) on partial deliveries. In our discussion, you posed a specific example of a single purchase of securities in which half are of one maturity and half of another maturity and inquired whether or not delivery of only one of the maturities would constitute a "partial" under the terms of the rule.

As I stated to you, if the transaction is effected on an "all or none" basis, and your confirmation is marked "all or none" or "AON," this would suffice to indicate that the purchase of both maturities constitutes a single transaction, and that both maturities must be delivered to effect good delivery. MSRB interpretation of February 23, 1978.