1946 And 2015 Penny Bubbles On The Coin Looks Like The Same Issue

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Author	Replies: 4 / Views: 1,031
sale4coin Valued Member United States 60 Posts	Posted 03/13/2021 2:56 pm Hi There, I did some research and a possible explanation might be this: 1. They seem to be more common on cents from the Denver mint. Solid-alloy cents minted in 1982 and earlier can have occluded gas bubbles caused from heat generated when a planchet is struck. The expanding gas pushes a layer of metal towards the surface of the coin, resulting in a raised area or bubble. I could be wrong and I don't really know, hence the post. Is this common and is there a specific classification for this type of coin? Report this Post to the Staff

JimmyD Bedrock of the Community Canada 21610 Posts	Posted 03/13/2021 3:25 pm The 2015 is plating bubbles. The 1946 is PMD Report this Post to the Staff
Coinfrog Bedrock of the Community United States 94367 Posts	Posted 03/13/2021 3:25 pm Guessing the first coin may be suffering from high heat or acid damage, which the second exhibits zinc rot. to the CCF! Edited by Coinfrog 03/13/2021 3:26 pm Report this Post to the Staff
sale4coin Valued Member United States 60 Posts	Posted 03/13/2021 3:31 pm Thank You @Coinfrog @JimmyD Report this Post to the Staff
John1 Moderator United States 56855 Posts	Posted 03/13/2021 6:00 pm On the 2015-D, that is trapped zinc dust. John1 Report this Post to the Staff
	Replies: 4 / Views: 1,031

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