Can someone help identify Holster?

[Schupo]

"...also, im not sure what a police safety would be but it does say geirshert "spelling unsure, not home with it"

The police added secondary safeties to many of their pistols that were not on military Lugers. Here is a photo of a normally encountered police safety. The safety is a flat spring held on one end by a rivet on the top left side of the frame. You can see it at the top of the pistol in this photo.