I inheritated a pistol from my uncle. Attatched are 5 pictures with markings noted. I have researched until frankly I'm more confused than when I started. When was this pistol manufactured? Is the cartridge supposed to be a 38 special, or say 38 S&W special. This and any info will be greatly appreciated. I don't want to sell it, he was my favorite uncle, I would like to know about the history of the gun.