Ok guys seems you know alot more about this make of gun than I do. I got a Iver Johnson revolver .22 6 shot that i got from my aunt for Christmas. Its serial # is K57018. The only markings on it are the serial number on the right side, and Iver Johnson’s Fitchburg Mass USA, on the left right under the cylinder. Hopefully you guys can tell me something as my aunt said it was my uncles and didn’t know much about it.