Any Know What US Going On With This 2009 Penny?

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Author	Replies: 18 / Views: 2,922	Page: of 2
Herestohoping Valued Member United States 405 Posts	Posted 05/29/2022 4:30 pm Never seen one like this Report this Post to the Staff

coop Bedrock of the Community United States 62064 Posts	Posted 05/29/2022 4:35 pm Probably a split on the plating and then soaked in an acid and it accelerates the break down of the zinc on the coin. The weight will be under if this has happened. (less than 2.5 grams.) If you find the affected area, take images of that. I need images of a coin this has happened to. I've seen other examples before the not with nice images. I'd add them to my education image files. Here is a pre-view of one the images I'm working on. Waiting for weight and final details: A bit different from the original images. The lower space if for detail information. Edited by coop 05/29/2022 5:46 pm Report this Post to the Staff
ijn1944 Bedrock of the Community United States 19194 Posts	Posted 05/29/2022 4:50 pm Is that wavy look actually undulating (rising/falling)? Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 05/29/2022 5:50 pm The zinc under the plating is probably dissolved. Seen this before on the forum. Report this Post to the Staff
Coinfrog Bedrock of the Community United States 94367 Posts	Posted 05/29/2022 6:30 pm Good explanation from Dr. coop. Report this Post to the Staff
Dearborn Moderator United States 97083 Posts	Posted 05/29/2022 6:52 pm Curious as to what the weight is, 2.5g or 3.11g. Could this be a copper 2009 that was heated? 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
ijn1944 Bedrock of the Community United States 19194 Posts	Posted 05/29/2022 7:12 pm Eager to hear back from Herestohoping... Report this Post to the Staff
Sap Moderator Australia 16845 Posts	Posted 05/29/2022 9:45 pm Quote: Could this be a copper 2009 that was heated? No. A copper/bronze coin under directed high heat (like a blowtorch) does "ripple", but the ripples are much finer than this. I'm not entirely sure what a zincoln will do under a blowtorch, but I suspect that it wouldn't look like this either. This looks to me like a "corrosion from within", as Coop suggests. Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis Report this Post to the Staff
silviosi Pillar of the Community Canada 6244 Posts	Posted 05/29/2022 9:59 pm @SAP Under the heat any metal at the point to melt or at the half of those temperatures, first change the colors and start to shrink no to expand. This it is molecular reactions. Report this Post to the Staff
Dearborn Moderator United States 97083 Posts	Posted 05/30/2022 12:22 am I wasn't referring to a 'blowtorch type of heat. maybe a furnace/quench routine could warp a copper coin. 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
Herestohoping Valued Member United States 405 Posts	Posted 05/30/2022 8:03 pm Weight is 2.5 grams Report this Post to the Staff
silviosi Pillar of the Community Canada 6244 Posts	Posted 05/30/2022 9:47 pm Quote: ] wasn't referring to a 'blowtorch type of heat. maybe a furnace/quench routine could warp a copper coin. Totally agree. Report this Post to the Staff
Herestohoping Valued Member United States 405 Posts	Posted 05/31/2022 12:45 am Crazy what you can find in rolls out of boxes! Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 05/31/2022 2:26 pm Then they may have been torched? Moist often we seen the affected areas showing a split and when acid touches the zinc, the wrinkling begins. Thanks for the extra images. Edited by coop 05/31/2022 3:33 pm Report this Post to the Staff
Dearborn Moderator United States 97083 Posts	Posted 05/31/2022 5:40 pm Well with the weight identified as 2.5g, we now can say that this is not copper, but instead zinc/copper plated cent, but I still stand by my assessment that this was heated to achieve the warping we see. 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
Herestohoping Valued Member United States 405 Posts	Posted 06/07/2022 12:08 am Ty all for the info didn't know people used torches on coins lol good to know though Report this Post to the Staff
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