From Wikipedia:
Saw this sitting on the shelf of a local gun shop and thought it deserved a home for the holidays. It's in rough shape but appears to be in working condition.The Model 1 3rd Issue represented a substantial redesign for the Model 1, with a fluted cylinder, a round barrel and a rounded "bird's head" style grip. Finishes included nickel plating (on both the frame and barrel) and blued steel. Produced from 1868 through 1882, the 3rd Issues were serial numbered from 1 through approximately 131,000