A Colt Model 1851 Navy Revolver

dating: Third quarter of the 19th Century provenance: USA, Octagonal, rifled, cal. 36 barrel, with brass fore-sight, marked 'ADDRESS COL. SAM.L COLT NEW-YORK U.S. AMERICA'. Smooth, six-shot cylinder. In working order. Frame marked 'COLTS PATENT', brass grip strap with caliber caption. Serial number '164xxx' matching on the barrel, frame and grip strap, traces of not readable numbering on the cylinder. Wooden grip. length 33,5 cm.