94. Colt U.S. Artillery Single Action Army Revolver. .45 cal. of course, 5 1/2" barrel, nice bore, barrel is basically a thin plum gray patina with traces of dark blue in protected areas, type three ejector housing with 50% blue- correct doughnut head rod head. Cylinder is a plum gray patina with flutes retaining plum-blue patina finish. Traces of color on long-knurled hammer, frame is a dark plum blue patina. Correct base pin. One piece walnut grips are solid- lightly sanded and refinished- no markings visible- great fit however. Early script barrel address very good- sn 1797, T.G.18892, H. Nettleton marked frame, Casey T.G., Lewis backstrap with no SN. early cylinder with small approaches- markings not readable. This is a real decent artillery in nice condition.