Dave,
I think it pretty much depends on how deeply the numbers are struck. The same die can appear to produce a number from 2.5mm to 3.0mm+. My Borchardt mag numbers appear to be a solid 3mm. Your measurement of 4mm falls in line with Pat's and Norms measurements. It would seem that there is a 1.5mm variance with the median falling around 3mm or so. I would be hesitant to reject a magazine with numbers falling between 2.5mm to 4mm if all other characteristics were good. You are my primary resource for Borchardt info, so I would greatly appreciate your assesment of what can be accepted.
Thanks,
Ron
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If it's made after 1918...it's a reproduction
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