The right side of the slide is marked “GOLD CUP / NATIONAL MATCH” with a trophy. The left side of the slide is marked “1871 NRA Centennial 1971 / THE FIRST 100 YEARS OF SERVICE / .45 AUTOMATIC CALIBER”. The right side of the frame is marked “COLT’S PT. F.A. MFG. CO. HARTFORD, CONN. U.S.A. There is a “VP” in triangle proof on the left side of the trigger guard along with “H”. The top of the barrel is marked “COLT 45 AUTO. N.M. / MK.IV/SERIRES’70”.