Gun Barrel Proof Act 1978

3 (1) The Proof Master of each of the Two Companies shall continue to keep the register of foreign proof marks kept before the passing of this Act under section 129 of the Act of 1868 (in this Schedule referred to as "the former register"), as it had effect immediately before the passing of this Act; and the former register shall continue to be open for public inspection without charge at all reasonable times at the Proof House of each of the Two Companies.

(2) The reference in paragraph (14) of section 121 of the Act of 1868 to any stamp or mark, or any part of any stamp or mark of a foreign country, registered by either of the Two Companies under the [1855 c. cxlviii.] Gun Barrel Proof Act 1855 or under the Act of 1868, shall continue to be construed as referring to registration in the former register, and the reference in paragraph (6) of section 138 of the Act of 1868 to the register of foreign proof marks shall continue to be construed as a reference to the former register; but a person shall not by virtue of this sub-paragraph and paragraph 6(2) of Schedule 3 to this Act be liable to be punished twice under section 121 of the Act of 1868 for the same offence.