Here is a recent acquisition, and a Luger that was in service for a long time.
It entered service in Imperial Germany in 1918, indicated by the chamber date. Looks to have originally been an Artillery variation.
Was retained for service by the Weimar Republic, as shown by the 1920 property marking.
Re-barreled in the 1930s, by Mauser as indicated by the HZ barrel extension stamp and the S/42 barrel stamp.
https://www.dropbox.com/sh/28e5ruu3f...6i23X_2ra?dl=0