Customer purchased stock in a special cash account with a member firm on Day 1. On Day 3 customer sold the same stock at a profit. On Day 8 customer delivered his check for the cost of the purchase to the creditor (member firm). On Day 9 the creditor mailed to the customer a check for the proceeds of the sale.
* * * The creditor may disregard for the purposes of this subparagraph (§ 220.4(c) (8)) a sale without prior payment provided full cash payment is received within the period described by subparagraph (2) of this paragraph (seven days after the date of purchase) and the customer has not withdrawn the proceeds of sale on or before the day on which such payment (and also final payment of any check received in that connection) is received. * * *
For the purposes of this part (Regulation T), a creditor may, at his option (1) treat the receipt in good faith of any check or draft drawn on a bank which in the ordinary course of business is payable on presentation, * * * as receipt of payment of the amount of such check, draft or order; * * *
This is a general provision substantially the same as language found in section 4(f) of Regulation T as originally promulgated in 1934. The language of the subject exception to the 90-day rule of § 220.4(c)(8) , i.e., the exception based expressly on final "payment of any check," was added to the regulation in 1949 by an amendment directed at a specific type of situation. Because the exception is a special, more recent provision, and because § 220.6(f) , if controlling, would permit the exception to undermine, to some extent, the effectiveness of the 90-day rule, sound principles of construction require that the phrase "final payment of any check" be given its literal and intended effect.
12 C.F.R. §220.117