I've coveted the early '37s for a while, and finally just scored one. R-block, mag mm, and it came with a holster that is a bit beyond my depth, little of my learning has been devoted to WW1 era stuff.
The holster is maker-marked C Förster, Hannover, dated 1914 on the inside of the flap. I can find nothing on this maker nor any pics of any of their other rigs. I'll take a stab and guess that this firm was not in the Luger leather game for long. The holster also houses a c/U tool.
The pistol itself is in pretty nice shape, prewar craftsmanship at its finest. Bluing is fully intact down the straps, there's a cuticle-width ring of finish loss around the muzzle and a small patch of wear on the leading edge of the right frame. The right grip has a circular patch of compression directly behind the mag release, otherwise all the checkering is sharp. All strawing is healthy. This gun looks to be neither handled nor fired much in 79 years.
As a side project I have the shop asking the consignor of this pistol about the potential existence of any capture papers. Maybe they can dig something up, it's worth a shot. Pics below. Opinions welcomed.