Busy indeed!
I looked up Plauen, Saxony on the map and realized it was part of East Germany. Is it reasonable to think that a Russian may have taken possession of this Luger after the war? Granted 25 years had passed by then and the weapon in the hands of a Nazi soldier could have found its way all the way Normandy or Africa or anywhere in between where allied troops could have captured it. Can one trace such movement of individual arms?
Anyway, here are some fresh pics of the underside. The front strap is smoother and shinier than the rear strap or the rest of the blue. The gray area around the lower 'P.' appears to be holster wear. There is no period between the 'S' and the 'P.'
Russell