Is it worth finding out what it is?

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Maybe in its former life.

Lincoln Memorial Cent. Date is unimportant.

 

Yes,it's a heavily corroded copper Lincoln memorial cent 1959-1982,part of the memorial is quite visible on the reverse.

 

Using the top picture, I would say it is a memorial cent. You should be able to check the size against another one.

 

Hey! Anyone say Lincoln cent?

 

No.

 

Be sure to wash your hands.

 

You can't make it any worse, so I'd go for it. It looks like a calcium deposit, so maybe soak it in CLR, or some other calcium remover.

 

It’s a LMC and not worth your time to investigate any further.

 

For the copper pile.

 

Back into a re-roll to return for bank. I knew it was a Lincoln - just accidently hit "post" before I could add some words.

 

What chemical formula with Cu do we have here?

 

With all those burst bubbles I would say it's zinc that bled through. But to answer your question simply-no.