Many thanks for all your input guys, but i seem to have created rather a lot of confusion........Sorry about that.....
The link i posted to the holster showed two diferent holsters, a Luftwaffe issue and the one i am inquiring about.
The one i had three guesses at has no marks on the back, and i bow to your collective knowledge that it is indeed a police issue holster.
Again, many thanks for your help....
Steve.