The top barrel flat is marked "PATENTED SEPT. 14, 1858 MARCH 17 1863/E. REMINGTON & SONS, ILION, NEW YORK U.S.A./NEW MODEL".The number "3121" is marked on the left side of the frame under the grip and both grip panels with the number "2121" on the barrel and the number "984" on the cylinder and cylinder conversion plate. Fitted with varnished grips.