Welcome to the Forum. That is an early 1920's 22/32 Heavy Frame Target. It is a 22 caliber due to the pin in front of the hammer. It has what looks like 6 digits on the front of the butt-frame, a barrel shaped ejector rod knob, and a convex single screw set of 1920's stocks. Check the number there again and let us know what you see? Also, does it have a MADE IN USA on the right side of the frame?