Norse Medal Gold

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Unique 1964-D Dime Struck on Cent Alloy

1964-D Dime--Struck on a Cent Alloy Planchet--MS 64 PCGS. We are pleased to again offer one of the most intriguing errors in U.S. numismatics. We sold this piece in our 1998 National Money Sale, where it was described as, "This is undoubtedly one of the most curious and interesting errors we have ever seen. After much discussion, examination, and consultation with an outside expert, the bottom line is we really can't explain how this coin could have been produced--and yet here it is.
"First of all, there is no way this dime could have been produced from a cent planchet--it is the thickness of a standard dime, not a cent. Second, it could not have been struck on a foreign coin blank as the U.S. Mint did not strike any copper foreign coins in this time period. Even if one assumes that the coin had "help" in production, there are problems with that theory. A sheet of copper intended for cent production would have to have been passed through rollers to reduce it to the proper thickness for dime production. Then in stamping out the blank planchets, either 12 or 24 blanks would have been produced. To date, this is the only such coin known. What happened to the other 11 or 23?
"(Found by the consignor in 1998) in circulation around the time of issue. He mailed it to ANACS in 1979 or '80, and after holding it for several months for examination, they returned it with no decision. At that time ANACS did not have a scanning electron microscope. (He) then sent it to a laboratory that did have a SEM, and they confirmed its metallic composition (unfortunately, we do not have the papers from this analysis). With the advent of ANAAB, the coin was once again submitted. In a front page article from Numismatic News of November 29, 1994, J.P. Martin said, "Everything looks legit. I just can't explain it." ANAAB Certificate Number AB 3277 verifies that this is a 'U.S.A. 1964-D 10c--Struck on Cent Alloy.' The weight is officially given as 2.223 grams. A specific gravity was apparently also taken and it is given in the NN article as 8.583."
Ex: 1998 National Money Show (Heritage, 3/98), lot 5726, where it brought $2,645.

Coin Index Numbers: (NGC ID# 28NU, PCGS# 9452, GSID# 10337)

View Certification Details from PCGS