.31 Colt Pocket - Colt Cartridge Works

.31 Colt Pocket - Colt Cartridge Works

.31 Colt Pocket - R. Bartholow

.31 Colt Pocket - R. Bartholow

.31 Colt Pocket - H. W. Mason

.31 Colt Pocket - H. W. Mason

.31 Colt Pocket - Leet & Hall

.31 Colt Pocket - D. C. Sage