.45 ACP. 5.5" barrel length. SN: 154716. (Mfg. Ca 1918) Brushed blued metal finish with polished hammer flanks and mounting smooth walnut grip panels with a lanyard loop to the butt. Double action hand ejector revolver with six-shot cylinder and mounting fixed front blade and topstrap notch sights. Barrel address is struck in two lines and reads COLT'S PT. F.A. MFG. CO. HARTFORD. CT. U.S.A./PAT'D AUG. 5. 1884. JUNE 5. 1900 JULY 4. 1905, with the left barrel showing the caliber marking COLT D.A 45. The "UNITED STATES PROPERTY" marking has been stamped beneath the barrel. A {Rampant Colt} logo appears on the left sideplate, and the model marking U.S./ARMY/MODEL/1917 appears on the butt. Left frame beneath the rear sight features the {Eagle Head}/S15 inspection stamp, and an H inspection initial has been struck into the rear of the cylinder. Colt's factory applied serial on the frame and crane is 304590. Left grip panel is pencil marked with the last three digits of the serial on the butt, and both grip panels have been cut to permit the mounting of a black synthetic PACHMAYR GUN WORKS marked grip extension.