5/19/23 - The serial number dates the gun to about 1934/35, and there are a few RZM PPK's near this serial number. However, the bulk of the RZM marked guns began to phase out in the 840xxx serial range. So in checking the internal markings of the slide, we cant say that it has a matching number (last 3 digits) . It actually looks more like the last 3 digits were renumbered or illegible. Therefore, we are selling this RZM slide on a later frame and not claiming that they are matching. It does have a correct early grip and early finger extension. The original finish is covers about 80-85% of the gun. Comes in 7.65mm, and it has an excellent shiny bore.