Proof mark referencies

davidukdaviduk Member Posts: 24 ✭✭
edited February 2008 in Ask the Experts

I am looking to find an online reference to proof marks and the
dates which go with them. Focusing on the late 1800's period
& to include in particular Belgian Liege marks found on small revolvers. I'd like a fairly official site &/or any books which offer the same info.

Any help appreciated.



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