1987-D Copperless Penny High School Chem Project?

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Author	Replies: 7 / Views: 1,920
ccobb Valued Member United States 485 Posts	Posted 04/06/2019 3:36 pm Evidence of copper is there so it was more than likely removed chemically. Report this Post to the Staff

Errers and Varietys Bedrock of the Community United States 74707 Posts	Posted 04/06/2019 3:39 pm Yes, it's been altered with. You're correct. Errers and Varietys. Report this Post to the Staff
Spence Moderator United States 34427 Posts	Posted 04/06/2019 4:33 pm Yep I agree too! "If you climb a good tree, you get a push." -----Ghanaian proverb "The danger we all now face is distinguishing between what is authentic and what is performed." -----King Adz Report this Post to the Staff
Coinfrog Bedrock of the Community United States 94367 Posts	Posted 04/06/2019 5:59 pm These weren't around when I was a kid, but if they were, I'd have had a go at stripping them myself. Edited by Coinfrog 04/06/2019 5:59 pm Report this Post to the Staff
sel_69l Bedrock of the Community Australia 21788 Posts	Posted 04/06/2019 6:20 pm Because there is still a considerable amount of detail, I am considering that it could be a fake, and not acid etched. Only my theory, I may very well be wrong. It is worth doing an experiment and photographing the result, on this Forum to confirm, either way. Report this Post to the Staff
fortcollins Pillar of the Community United States 3663 Posts	Posted 04/06/2019 6:49 pm It's reverse plated. It's easily done by reversing the anode and cathode, and the process can be done with a battery. It's a standard lab experiment. Report this Post to the Staff
sel_69l Bedrock of the Community Australia 21788 Posts	Posted 04/06/2019 9:36 pm I never thought of that. I agree that what you say, may well be the case. Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 04/07/2019 7:33 pm I feel it was plated over the copper plating. On the bust at 5:30 you can see the copper plating. Also the wrinkles of the copper plating is present. If it were non plated, it would not be shiny and the planchet would be smooth. Report this Post to the Staff
	Replies: 7 / Views: 1,920

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