2010 P Roosvelt Dime. 100% Copper? - Coin Community Forum

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Author	Replies: 8 / Views: 2,095
Carlos arriaga Valued Member United States 136 Posts	Posted 04/23/2014 11:09 am I found this one in a roll from the Bank. The weight is 2.29 Gr. Thickness .053" and Dia. .705" Thank for your comments. In the same roll I found another dime with a Cupronickel layer missing. (will post later) Report this Post to the Staff

ErrorCoins222 Pillar of the Community United States 1699 Posts	Posted 04/23/2014 11:33 am Looks to be improperly anealed but I'm getting less and less confident in diagnosing this error from photos. Report this Post to the Staff
Collector-Corner Pillar of the Community 872 Posts	Posted 04/23/2014 11:39 am yeah it probably went through a copper bath, maybe missed its final nickel bath. I have seen these before, but thats my best guess. Report this Post to the Staff
Conder101 Bedrock of the Community United States 17884 Posts	Posted 04/23/2014 11:49 am Looks like a discolorored coin. I doubt it being solid copper. Can't be missing clad layers, too heavy. Missed its final nickel bath? What the heck is that? Report this Post to the Staff
Carlos arriaga Valued Member United States 136 Posts	Posted 04/23/2014 12:03 pm Tomorrow I'll put a dime with a missing layer. with a weight very low and a thickness very thin. Both of them were in the same bank roll. MAY BE THE CHEMICAL COMPOSITION ITSELF OF THE OUTER LAYERS. Remember that; they call them "cupronickel" because have nickel and copper. This happen if they put too much copper. Edited by Carlos arriaga 04/23/2014 12:15 pm Report this Post to the Staff
John1 Moderator United States 56855 Posts	Posted 04/23/2014 12:19 pm Looks like environmental damage to me. John1 Report this Post to the Staff
ErrorCoins222 Pillar of the Community United States 1699 Posts	Posted 04/23/2014 6:55 pm It does lack luster, but it also looks, as many coins do confirmed to have been improperly annealed. And actually improper annealing results in a migration of the copper atoms to the outside of a coin, not derived specifically from too much copper in the outside layer, nor from the lack of a nickel bath. Edited by ErrorCoins222 04/23/2014 6:57 pm Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 04/23/2014 7:54 pm If this coin was missing a clad layer, what color should it be? If it was missing a clad layer, should areas that are still showing be visible where the silver color comes through on the high points of a coin? Looks like something was added to the coin like a rinse in acid or something mildly acidic. I've seen this color on a 1943 Lincoln Cent that transferred a light amount of copper from being in with copper cents in a cleaning process. When the rinse is rubbed off, you can see the clad layer showing through again. If it was incorrect annealing, the color would remain unchanged with light circulation as the cladding would be stained/colored dark in appearance with a shiny look to the surface. This one does not fit the bill on this one. Just a surface altered coin. Report this Post to the Staff
Carlos arriaga Valued Member United States 136 Posts	Posted 04/24/2014 07:29 am Since the Reverse has some silver spots. I vote my self for IMPROPERLY ANEALED. In reality the amount of cupronickel is very thin in each side of the dimes. That's way the migration of the copper atoms to outside is absolutely normal when they get a lot of heat. Thank again every body for your help. Report this Post to the Staff
	Replies: 8 / Views: 2,095

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