Introduced in 1866, with only around 8000 produced. Blade and notch sights, with one line "Naubuc, Conn" address on top barrel flat and patent dates on the breechblock. Spur trigger, checkered hammer, casehardened frame and checkered hard rubber grips.

Excellent, with 95% of the original blue finish, showing a bright patina along the high edges and patches of brown on the flats and curves. A brown patina is forming on the frame, with bright color still visible. Some minor handling marks are visible overall. Grips are very good, with crisp checkering and minor pressure dents. Action is excellent.