Manufactured from 1863 to 1875. The top barrel flat is stamped "PATENTED SEPT. 14, 1858/E. REMINGTON & SONS, ILION, NEW YORK, U.S.A./NEW MODEL". Most of the major components are stamped with "P", "D", "R" and "W" single letter sub-inspector marks. The matching serial number is marked on the left side of the frame under the grip, on the bottom barrel flat and marked in pencil on the inside of each grip panel. Pinched blade front and frame notch rear sights, blue finish, casehardened hammer, brass trigger guard and fitted with smooth walnut grips with a clear "OWA" boxed cartouche on the lower left side.