I found a 1935 Mercury Dime stamped onto a (tails) Penny, likely the same year in my cash box today.

[no_hypocrisy]

I believe this is called a double denomination and a Wrong Planchet Error Coin.

Does anyone have any information and/or history about this aberration?

I think it's cool.

[PoindexterOglethorpe]

1. You might want to simply google that.

[Trueblue1968]

12. like this ???

https://www.google.com/search?biw=1187&bih=709&tbm=shop&sxsrf=ALeKk01JlyBT0i6nTH2YBB5X8jo9J6JP7A%3A1614160670165&ei=HiM2YIW6CZbk-gTVuoWgAQ&q=1935+Mercury+Dime+stamped+onto+a+Penny&oq=1935+Mercury+Dime+stamped+onto+a+Penny&gs_lcp=Cgtwcm9kdWN0cy1jYxADOgcIABCwAxAYOgkIABCwAxAKEBg6BAghEApQiiBYo0hg6VJoAXAAeACAAZYBiAH3BZIBAzkuMZgBAKABAqABAaoBD3Byb2R1Y3RzLWNjLXdpesgBCsABAQ&sclient=products-cc&ved=0ahUKEwiFweuKoYLvAhUWsp4KHVVdARQQ4dUDCAs&uact=5

[soothsayer]

2. Really! I've never heard of such a thing

Do you think people are digging into their coin collections to make ends meet? Or just some kind of fluke?

[Enterstageleft]

3. Oh, I don't think it's worth anything...

but I'll give you a dollar for it.

[House of Roberts]

4. So this was a penny, with the mercury dime image stamped into the copper?

[no_hypocrisy]

7. Specifically, it's a silver Mercury 1935 dime stamped onto the back of a 1935 copper penny.

[GemDigger]

5. It may be worth something, I would set it aside. If you have a coin dealer in your neck of the woods

they would be happy to check it out for you.

Is there a mint stamp with the date?

[2naSalit]

6. Get it appraised, it might be worth something to collectors.

[Polybius]

8. Please post some pics, or at least a follow-up

I'd like to see the front and back.

[no_hypocrisy]

9. I don't know how to post photos from the phone on DU.

I'll see what I can do.

[DFW]

10. Send a photo to Heritage Auctions in Dallas

They have guys there that are specialists in error strikes, and could probably give you a ballpark value.

HA.com

[no_hypocrisy]

11. Thanks!

[carolinadem]

13. wow

thats very rare.
what condition is it in?
worn and circulated or very good?
do you want to keep it or sell it?
suggest you have it graded.
it could easily be worth hundreds to thousands depending on condition