Nice one. Like a lot of the Bavarian PP’s of the Manurhin-stamp era, this one had its original grip panels switched out for standard Walther panels at some point.
I just found out recently that the ByP stamp was not applied originally back in the 1950s when these entered service. Around 1968/70 West Germany passed a law requiring all service guns to have a property mark. Some states, like NRW, ignored it, and didn’t start systematic stamping until the adoption of the next pistol generation. But a few others, like Niedersachsen (Nds) and Bayern (ByP) went back and stamped every unmarked gun in their possession. Bavaria had some guns with an earlier LPBy mark.
I just found out recently that the ByP stamp was not applied originally back in the 1950s when these entered service. Around 1968/70 West Germany passed a law requiring all service guns to have a property mark. Some states, like NRW, ignored it, and didn’t start systematic stamping until the adoption of the next pistol generation. But a few others, like Niedersachsen (Nds) and Bayern (ByP) went back and stamped every unmarked gun in their possession. Bavaria had some guns with an earlier LPBy mark.