No formal assignment shall be required for the conversion to book-entry Postal Service securities of registered Postal Service securities held by a Reserve Bank (in either its individual capacity or as fiscal agent of the United States) on the effective date of this part for any purpose specified in § 761.3(a). Registered Postal Service securities deposited thereafter with a Reserve Bank for any purpose specified in § 761.3 shall be assigned for conversion to book-entry Postal Service securities. The assignment, which shall be executed in accordance with the provisions of part 760 of this subchapter and subpart F of 31 CFR part 306, so far as applicable, shall be to “Federal Reserve Bank of —————— as fiscal agent of the United States acting on behalf of the Postal Service for conversion to book-entry Postal Service securities.”