The above Proofmark Reference gives dating commenced in 1903 but one can see here it was earlier and might have started back in the late 1890s???


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It was this chamber cast & proofmark info where I was trying to determine the kalibre. Early on, I had equated >>181<< w/ the 303 British, but that could easily have been in error or the >>181<< stamp could cover additional kailbres or span several kalibres.

Hochachtungsvoll,

Raimey
rse