1953 Half Penny Thin Planchet - Genuine Error?

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Author	Replies: 6 / Views: 212
ClusterCoin Valued Member Australia 112 Posts	Posted Yesterday 06:23 am When sorting through a pile of half pennies from a bulk auction I came across a 1953 half penny that's very thin and slightly smaller than a real half penny. I have photographed two coins side by side for comparison and am looking for opinions whether this is a genuine error or some sort of fake. Genuine: 5.63g Thin: 3.11g Sigma Metalytics measurement mode gives 3.03 for a genuine coin and 2.96 for the thin, strongly suggesting the thin coin is the proper alloy. Coin is non magnetic. The doubts I have is I don't know how an error like this happens, why the thin coin has such heavy wear (surely someone would notice that it's an error earlier than I did?), and that I have come across really thin pennies while beach metal detecting, although these have heavy surface pitting. The diameter shrinkage and poor detail on the coin have me leaning towards someone dipping the coin in acid. Comments and thoughts welcome. Edited by ClusterCoin Yesterday 06:34 am Report this Post to the Staff

JimmyD Bedrock of the Community Canada 20778 Posts	Posted Yesterday 07:04 am Not an error, the smaller coin is damaged from having had an acid bath which has etched part of the surface of the coin away. We see these periodically on the forum. Report this Post to the Staff
Spence Moderator United States 33739 Posts	Posted Yesterday 07:07 am Quote: The diameter shrinkage and poor detail on the coin have me leaning towards someone dipping the coin in acid. 100% agree! "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
ClusterCoin Valued Member Australia 112 Posts	Posted Yesterday 07:15 am Great. Thank you for your comments. I rarely come across coin abuse and doing something like acid dipping a coin seems pointless to me, but it looks like someone had fun. Report this Post to the Staff
gxseries Pillar of the Community Australia 3767 Posts	Posted Yesterday 07:24 am It's commonly done as a science experience to illustrate how dangerous acid can be. My partial coin collection http://www.omnicoin.com/collection/gxseries My numismatics articles and collection: http://www.gxseries.com/numis/numis_index.htm Regularly updated at least once a month. Report this Post to the Staff
Errers and Varietys Bedrock of the Community United States 63514 Posts	Posted Yesterday 11:56 pm Agreed. It's an acid dipped coin. PMD. Errers and Varietys. Report this Post to the Staff
jbuck Moderator United States 171006 Posts	Posted Today 1H 45M ago Interesting find. Keep as an example of an acid damaged coin. Coin Collector Since 1978 My Avatar My Old Avatar My 7070 My Eisenhower Dollars CCF Members on eBay CCF eBay Search Engine Report this Post to the Staff
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