There should be a manufacturers code on the top of the receiver.
I can tell you from your pics that its a late war stock, so it is correct, at least in that sense. Someone also went through the trouble of replacing the 'capture screws' and the sight hood.
Jpattersonnh is the man when it comes to mausers, he is usually pretty good about finding threads like this, so I'd bet he'll be along shortly.
Just passing through...
Last edited by sputnik1988; 05-16-2013 at 02:33 PM.