So, I received this pistol for Christmas from my father-in-law. The story in the family goes, is that his grandfather or great-grandfather (I cannot remember which), bought this pistol off of Clyde Barrow. He had him hand write out a receipt because he wanted to make sure that it was not stolen. Unfortunately, the receipt cannot be found at this time. I was wondering if someone can help me date this pistol and also the caliber. I tried a .44 special in the cylinder and it almost fit snugly, but not quite. The ones I see are usually .38 cal, but that shell just falls through the cylinder. I have attached a couple of pics of the pistol. If you cannot see the serial number well, it's 6563. Unfortunately, my father-in-law's relative put their initials on the handle (hated that!). I want to get this pistol restored to working condition. Thank you in advance for any help!