Good morning all! Since i'm new to errors just thought i'd ask if this is something to keep or is it a spender ? At times i'm pretty sure its chemical reaction to surface of the coin but then again its just so copper in color ... any advice will be much appreciated !
Hard to tell as it looks like stains in the areas showing copper. It may be a problem occurred at the mint with the coins surface so I would hang on to it. Not what I would call a spender at this point.
Looks like it could be a Mint Error; Improperly Annealed/Sintered Planchet to me. "If the annealing process is not carefully controlled, the copper atoms from the core of the planchet can migrate to the surface, causing the color to change from the normal finish to a copper or copper-brown color."
There are some sharp borders on both sides that shouldn't be there. I think a foreign substance (glue?) is on the coin and elsewhere it caused staining.
"Sintered Planchet" and "Copperwash" were the pedegrees TPG used to use before naming them "Improperly Annealed". Here are some other examples on different denominations:
He's on a holiday in PR. I'm guessing it will be staining or something other than an error but what do I know. Soak it good, real good, in "acetone". Use distilled water to rinse is what's recommended I guess.
I collect Missing Clad Layer Errors so this type of error interests me as well, especially rare examples with Full RED Obverse and Reverse.
I'm sure there is a gentle way to see if the copper color and dirt remove easily without damaging the coin. This could include but not be limited to a soft paint brush and a solution of warm/hot water and dish soap. That's how I treat coins with similar discoloration. Thus far, the copper color has come off easily on the coins I've used my paint brush, hot water & dish soap solution on. I had a couple dimes that I recently got in my change that looked just like this coin. I was hoping for it to be copper showing through the clad. No such luck for me.
