Greetings. I am just now starting to find some information on a pistol that I received many many years ago from my now deceased uncle. It is a "Union I" pistol 6.35 caliber. It measures about 4.5" in length and about 3.5" high. It has several markings which I am hoping will help some people clue me in on more information about it. Here are a few pictures. Any help or if someone could tell me who to go/talk to would be great. I am in Georgia, but travel to SC often as well. TIA!