With your excellent pics and description it is easy to help you out. Your revolver likely left the factory in the August-September 1944 time frame, based on the Victory Model Database. It was almost certainly a Lend Lease gun.
Post-war it served time in a West German law enforcement agency, perhaps the Bavaria Municipal Police or a similar outfit. That agency's marking on the left frame has now been removed, which is why you see the milled out area there below the cylinder latch.
The stocks are replacements, of course, as the revolver would have originally left the factory with smooth walnut stocks.
I hope that information is helpful to you.
Regards,
Charlie