Crown over letter stamps on the grips make no sense. That is a German military inspector/acceptance stamp, the use of which considerably post dates a 1900 model. The only conceivable donors of military marked grip safety grips that I can think of would be a 1902 or a 1906 German Army test piece, and I don't even know if they were marked.
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If it's made after 1918...it's a reproduction
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