kuduae:
Thank you for your recommendation regarding reading material, but I have all of Speed's books. I'm aware of the #1125 adjacent to the mounting boss but unable to confirm the number on the rear of the magazine. There is no sign of the Mauser address and ring date on the receiver. Removed? Can read the serial #89057 on the left wall and receiver face. This number is also stamped on the bolt handle root, firing pin nut, and safety. Mismatched bolt assembly? I would expect to see #1125 in these locations. Can't see a # on the bolt release. Also as previously stated, the bottom metal is altered or mismatched. I will concede that this action may have started life as a transitional, but not much of it remains. Maybe I'm too much of a purist. BTW, if you care to scan the Mauser photo archive, you may find my Mauser collection of interest.