31 C.F.R. § 328.7 Shipment of securities.
Title 31 - Money and Finance: Treasury
Securities bearing restrictive endorsements may be shipped, at the risk and expense of the shipper, by registered mail, messenger, armored car service, or express to the Federal Reserve bank of the district in which the presenting bank, the Service Center Director, or the District Director, Internal Revenue Service, is located, or to the appropriate branch of such Federal Reserve bank, shipments to the Bureau of the Public Debt, Washington, DC, should be made by messenger or armored car.
Title 31: Money and Finance: Treasury
PART 328—RESTRICTIVE ENDORSEMENTS OF U.S. BEARER SECURITIES
§ 328.7 Shipment of securities.

