.41 rimfire cal., single shot, 2 1/2 in. side pivoting barrel, marked "COLT'S PT.F.A.MFG.Co/HARTFORD CT. U.S.A./No 2. 41 CAL" on right side of frame (standard model) or "ADDRESS COL. COLT/HARFORD CT. U.S.A." (early model), half moon blade front and hammer spur notch rear sights, iron or brass (rare) frame, steel barrel, blue, nickel, or silver plated barrel, checkered and varnished walnut grips, scroll engraving standard, "No 2" marked on top of barrel, knife blade pattern ejector. Mfg. approx. 1870-1890. RF=2.