I'm fond of old pocket guns, here is a Merwin Hulbert revolver from between 1883 and 1890. Dates of manufacture records are sketchy due to a factory fire. This one is one of the later double actions in 38 SW. Merwin Hulbert dodged around existing patents with a unique action. It loads like a Colt through a gate but ejection is by pulling and twisting the front of the frame and all the empties fall out. This one referred to as the pocket model has a folding hammer spur to avoid snags in your pocket.