Identifying The 1971-D Kennedy Half Dollars Minted On 40% Sliver Planchet

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Author	Replies: 6 / Views: 8,935
epipro New Member United States 0 Posts	Posted 03/09/2023 3:09 pm Hi everyone, I am new to coin collection. I find the information on your forum useful. I have so many coins that might be rare/error/valuable, but I am not an expert. So, I probably will have many questions to ask. I mainly focus on Nicle, half and one-dollar coins. In particular, I want to learn how to identify (w/ a high degree of certainty) the 1971-D Kennedy half dollars that were minted on 40% sliver planchet. I spent a good amount of time searching for a criterion to make a determination (visual under tissue, magnet, drop & ring, etc.) and I am still not sure. Thanks Report this Post to the Staff

PlumCrazy814 Pillar of the Community United States 883 Posts	Posted 03/09/2023 4:01 pm The tissue test usually will tell you if you have a silver coin. Take a pre-1971 Kennedy half and put it next to a post 1971 copper-nickel clad half then put a tissue over them and you will see the difference. once you see the difference, you can try your 71 D. If you still are not convinced that your 71D is not silver, you can weigh it. Edited by PlumCrazy814 03/09/2023 4:05 pm Report this Post to the Staff
jbuck Moderator United States 187950 Posts	Posted 03/09/2023 4:36 pm to the Community! Your post was moved to the appropriate forum for the proper attention. Coin Collector Since 1978 Avatar Old Avatar 7070 Eisenhower Australia Canada World CCF Members on eBay CCF eBay Search Engine Report this Post to the Staff
cladking Pillar of the Community United States 2270 Posts	Posted 03/09/2023 5:52 pm Usually you can see the cladding on the edge. If you find a '71 that's silver and shows cladding there's a good chance that's it. Without the visible cladding it's probably plated. Time don't fly, it bounds and leaps. Report this Post to the Staff
halfamind Pillar of the Community United States 1484 Posts	Posted 03/10/2023 11:24 am Sure-fire method is XRF testing, but that can get pricey if you don't have a machine available. Weight difference between clad (11.34g) vs. 40% silver (11.50g) is relatively small and less useful. Ping test on an appropriate surface is helpful but could damage the coin. Report this Post to the Staff
halfamind Pillar of the Community United States 1484 Posts	Posted 03/10/2023 5:47 pm I'll add this: while the odds of it being 40% silver are infinitesimally small (it's probably plated, either nefariously or as a science experiment), it has been known to have happened: https://www.coinworld.com/news/us-c...-silver.html Report this Post to the Staff
nickelsearcher Moderator United States 15400 Posts	Posted 03/11/2023 06:48 am to the CCF Take a look at my other hobby ... http://www.jk-dk.art Report this Post to the Staff
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