Looks like a good old original to me. The proof /inspector marks are normal ones. Need pictures of the bottom of the mag and the sides. If Erfurt should have a crown/letter proof on the bottom below the serial number. Do all the internal numbers match? Especially the holdopen and trigger.
I believe your right receiver marks are from left to right:1. Receiver hardened satisfactorily mark. 2. Pistol ready for test firing. 3.Test firing satisfactory. 4 proofmark. I think this is right. Welcome to the crazy world of luger collecting. Bill
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Bill Lyon
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