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.