Kuduae,

this is very interesting as I have a rifle of the same type.
But the barrel is a later addition, with Munich proof marks and numbers 2598 and 968 (date?), caliber 5.6x52R.
I am responsible for the scope (a Pecar from the 1970s) and my gunsmith for the ventilated pad...
The action's only outside marks are "crown-over-B" and "crown-over-U". I never checked for any marks inside.

Regards,
fuhrmann