1993 Lincoln Cent - I Am Kinda Curious What Does This

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Author	Replies: 7 / Views: 822
Izzylizzy Valued Member United States 155 Posts	Posted 01/26/2023 3:47 pm What causes coins to look like the have warts all over them? * Edited by Staff to Add Year / Mintmark / Denomination to Title. It's very important to have in the title. * Report this Post to the Staff

MetalEarth Valued Member United States 109 Posts	Posted 01/26/2023 3:55 pm From this website I ran into a few descriptions when I was looking at a quarter that had two acid spots yesterday. https://www.coinworld.com/news/us-c...es-vary.html 5. Plating blisters Plating blisters develop in the coin in the immediate aftermath of the strike, as gas expands between the core and poorly bonded plating. Among domestic coins, plating blisters are the exclusive province of copper-plated zinc cents. Blisters are generally small and subcircular, with a smooth surface and soft outline. They can occur anywhere on the field and design. The design continues uninterrupted as it crosses a blister. 6. Occluded gas bubbles Solely the province of solid-alloy coins, occluded gas bubbles form just beneath the surface and push up the overlying metal immediately after the strike. Like plating blisters, the surface is smooth and the edges soft. The design is uninterrupted. 7. Corrosion domes Contaminants trapped beneath or penetrating the surface of aluminum, plated zinc, and plated steel coins can react with surrounding metal to form an expanding front of spongy, corroded metal. The resulting solid dome will superficially resemble a hollow plating blister or occluded gas bubble. In many cases the corroded metal bursts through and may fall out, leaving a crater. Report this Post to the Staff
HondoB Bedrock of the Community United States 26992 Posts	Posted 01/26/2023 3:56 pm Zinc rot in your zincoln cent. You don't see this in copper, clad, or silver coins. Inordinately fascinated by bits of metal with strange markings and figures Report this Post to the Staff
Dearborn Moderator United States 103749 Posts	Posted 01/26/2023 4:18 pm yep, silver labeled what we simply call 'zinc rot' Collecting since 1972. Learning from then on "Tell me and I forget. Teach me and I remember. Involve me and I learn." - Benjamin Franklin 7070 type set coin count: 51/76 Uncirculated American Silver Eagles My American Silver Eagle Proof Collection Sacagawea Dollars Innovation Dollars Eisenhower-Dollars Kennedy-Half Dollars Washington-Quarters Roosevelt-Dimes Buffalo-Nickels 1938-2005 Jefferson-Nickels Lincoln-Cents Report this Post to the Staff
Coinfrog Bedrock of the Community United States 94367 Posts	Posted 01/26/2023 5:12 pm Zinc rot, the perfect description. Report this Post to the Staff
Izzylizzy Valued Member United States 155 Posts	Posted 01/26/2023 5:39 pm I have like a bunch of them this one is the worst one they vary.. I thought they looked like warts lol kinda cool though! Edited by Izzylizzy 01/26/2023 5:44 pm Report this Post to the Staff
Izzylizzy Valued Member United States 155 Posts	Posted 01/28/2023 12:21 am From all the examples I seen it resembles the occlusion eruption burst bubbles! Thank you Report this Post to the Staff
silviosi Pillar of the Community Canada 6244 Posts	Posted 01/28/2023 01:49 am the bubbles you see are from a heat. The zinc was at least 300 deg, Celsius and begone to melt. Report this Post to the Staff
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