Yes, as Gary mentions, the serial numbers of Model 2s were stamped on the backside of the right grip and on the butt. I have serial numbers 1 & 2 in my collection and the serial numbers are both stamped on the rear of the right grip. Exceptions would be grips of ivory, pearl, or other non wood grips, which if they are factory grips will have the serial number written in black ink, or heavy pencil, on the back of the right grip. Assembly codes/numbers are stamped on the back side of the barrel, on the cylinder and on the grip frame. If all parts are original, the codes will match. Ed.