Not quite standard. The serial number is in the 40's. (The non-zero digits preceding the zeroes indicated caliber and model.) This and the non-rounded receiver shoulders place it in the prototype run of 50. Starting with the second run at #51 they rounded off the receiver shoulders as is standard on most Lugers. I have a magazine article claiming this was an oversight or oopsie on Mauser's part and they corrected it on the second run starting with #51. Whether or not this adds anything to the value is up for grabs.
unsepllable
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