1991 D dime mint error

I used my scanner to get these photo's. Looks like some sort of problem that involved another coin being stamped into this one, notice the recessed indention, there are what looks like marks from the edge of another dime there, like another dime was smashed into this one vertically. The front side looks like it was stamped very deeply, kind of off center, and maybe twice. What do you call this error, and how much would it be worth?

 

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Chances are it's intentionally done outside the mint, i.e. post mint damage and therefore just worth it's face value. Welcome to cointalk by the way.

 

The outer part of the reverse face was machined off in some fashion.

 

Hmm, well... Wouldnt there be some sort of lines or something if it were machined off? and the center of the back is higher than the sides, could it not be a mis strike of some sort?

 

looks like grease-filled die... lots of grease. lol

 

Think its worth much of anything? what about the indention? the photo's dont do it justice...

 

I dont know.
I could be wrong, since the outside is worn off in similar fashion to and older silver coin - but it could be artificial.

 

Huh, well, thank you very much for your advice, i appreciate you taking the time.

-Steve-

 

I've seen many acts of vandalism that are identical to your coin. You will find it seriously underweight. The exposure of the copper core along the outer margin and in the floor of that odd indentation are dead giveaways.

 

Go get it weighed at a jeweler or coin shop. If it's under weight you will know Mike is right - if it's dead on - send it to a TPG or one of the guys at Coneca for examination. Or just sell it on ebay - people buy anything.

Good Luck

 

I'm going to say post-mint damage.

 

I found a 1991 D dime with the silver stamped twice on the face side but the top stamping was of the back of a penny. Did the mint have errors like that?

 

What you are describing sounds like a hammer piece. A cent was placed on top of the dime and then hit with a hammer impressing the design from the cent into the dime.

 

okeefe, do you have pictures? And to the forum to both of you.

 

Hi,

Stick with Mike Diamond, he's one of, if not THE best, error guys on the planet. He is 1000% correct, not that I need to say so. This coin was tampered with after it left the Mint in a way that ground off the metal.

Thanks,
Bill

 

Darryl, you do know that Mike Diamond is President of Coneca right? ya got me to smile my man. Thanks.

 

Dear Mike,
There is a whole other layer on top of the dime and the edge has the little lines on it like it was in the dime press on the outer rim. You are probably right that it has been tampered with after it left the mint and I thank you for answering.
Okeefe

 

damaged outside of the mint

In my opinion, the coin was damaged outside of the mint. It looks like someone removed the material from the outside diameter or the reverse. They removed enough material so that some of the copper colored core became exposed. The coin may have circulated for sometime after this mutilation. I believe it is just a damaged coin at this point.

Very best regards,
collect89

 

Dear Collect89,
Thanks for your answer and I agree with you. Do you know the name of a good magazine that shows alot of stuff like that and coin values of old coins? I have recently inherited a large collection of all kinds of coins and bills and really know nothing about them except to keep them in the safe deposit at the bank.
O'Keefe

 

If you do not have The Guide Book of US Coins (Red Book) by R.S.Yeoman then I recommend you get a copy. It describes the fundamentals of US coin collecting and includes basic grading criteria & prices. Recognize that the prices listed are full retail prices and coins may trade for significantly (50%) less. You can probably look up much of your material in the book and then post some of the material here on CT for some opinions. To answer you question, there are magazines called Coin World, Coins, The Numismatist, etc but you probably want to begin with a copy of the red book.

Very best regards,
collect89