Sorry, my eyes thought you wrote germany.
If no germany, then it was for the commericial market.
A picture of the front of the frame so we can see the suffix would help.
I've seen this gray from being in the attic for many years on some lugers and nambu's.
Family legends sometimes are because they had one from the war and it got stolen or something and they buy another and the two stories get mixed...
I'd say the value is probably $500-$600?
Ed