Home Precious Metals

metallic composite testing

Dewlynn59Dewlynn59 Posts: 106
edited June 24, 2021 8:26AM in Precious Metals

A 1919 bronze I'm penny is 95%Cu. 4%Sn. 1%Zn. This is the true metallic composite. Weight 9.4gm. PCGS performed a metallic composite of the same coin, it was 95.6%Cu.3.3%Sn. and 1.2% Zn.
Conclusion: the Copper content is off by .6%, the Sn is off by0.00132% and the Zn is off by-2.3%. And the weight 9.54gm. How rare is this coin?

This 1933 uk. King George v. Pattern coin.


Sign In or Register to comment.