Derringer

.44-caliber single-shot spur trigger pistol, with 2" octagonal barrel. Blued or silver-plated, with walnut or gutta-percha grips. Barrel may be swiveled so either end can serve as chamber and marked "Double Header/ E.S. Renwick". Extremely rare, estimated that only 25 were ever made. Too rare to estimate.
Gun Type: Handgun