Hugh,
Thanks very much for posting photos of your police grip strap marks. Are there any more in your collection?
The Gumbinnen and Schleswig marks show evidence of earlier marks that were ground off. The earlier marks may have been in conformance with the 1922 orders and contained numbers for the Hundertschaft/Berietschaft (riot squad) to which they were assigned. Presumably, at the same time the Berlin marking format was changed, the format for all other Prussian Schupo was simplified to eliminate this designation.
I really don't know what the L.A. mark is. I am confident that it is not a Landj�¤gerei mark because the Landj�¤gerei did not include anything other than the administrative district and the weapon number. Does the pistol have a sear or mag safety? Here's a link to a similar mark:
http://forum.lugerforum.com/showthre...threadid=11894
I would appreciate knowing the serial numbers of the latter two (frame s/n for the Sch). If you prefer, you may email me at
donmaus1@aol.com.