Why Is This 1973 Penny This Color - Coin Community Forum

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Author	Replies: 4 / Views: 2,921
Poin New Member United States 43 Posts	Posted 02/06/2018 10:00 pm Found this today cherry picking and never seen one this color patina. Anyone else seen this before, all input is highly appreciated. Report this Post to the Staff

Willburton Pillar of the Community United States 2558 Posts	Posted 02/06/2018 10:09 pm It still has some mint luster most of them have turned brown by now Report this Post to the Staff
Crazyb0 Rest in Peace 10197 Posts	Posted 02/07/2018 12:08 am A more "brassy" look? It all depends where that baby was hiding. Certain environments, different chemicals, heat, salt. Remember, copper coins are 95% copper then 5% zinc, tin , manganese. this combination is actually bronze as a metal, brass is just a step up with a bit more zinc/tin in the mixture of the alloy. Exposure to certain things may change the outer surface microscopically in content to a more brass than bronze. Report this Post to the Staff
chafemasterj Pillar of the Community United States 6514 Posts	Posted 02/07/2018 06:53 am Could be plated. Someone may have silver (or a number of other metals) plated it or tinned it with solder. I've heard made reference that there is a process used back in the day using mercury to plate them as well. Here is a counterstamped plated 1976 Lincoln Memorial cent...It's much more silver than in the photo. Something is lost in the digital transfer. Check out my counterstamped Lincoln Cent collection: http://goccf.com/t/303507 Edited by chafemasterj 02/07/2018 06:55 am Report this Post to the Staff
T-BOP Rest in Peace United States 18456 Posts	Posted 02/07/2018 08:57 am I'm going with environmental issue . Copper coins have a tendency to turn many different colors according to their environment . Report this Post to the Staff
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