Probably a post WW1 commercial model. The 1908 9mm parabellum stopped using the grip safety and a stock lug was introduced about circa 1908, but the post war 7.65 commercial models could still be found with the grip safety fitted. There are far more knowledgeable people than me on here, and they will be able to give you more accurate information than I can.
Cheers,
Steve
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