Author Archives: Ken Potter

Doubled die on Cumberland quarter

Variety hunter Alfonso Lopez has garnered credit for finding the first reported Doubled Die Reverse on a 2016-P Kentucky Cumberland Gap America The Beautiful quarter. The doubling is easily seen with the naked eye (for some of us) or under … Continue reading

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Repunched ‘D’ mintmark on cent

Robert Lawson of Ohio has come up with a fairly major Repunched Mintmark (RPM) variety on a 1948-D Lincoln cent that to the best of my knowledge is unlisted by all the entities that list modern die varieties.  The variety … Continue reading

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Hot Lips found on 1964 dime

Numismatic News reader Michael Dustin has reported the first 1964 Philadelphia Roosevelt dime with a Doubled Die Obverse that I have been able to photograph. The doubling is very similar to the 1964 Denver Mint and 1953-S and 1955-S dimes … Continue reading

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Doubled 1926 dime found

David Sutton of Michigan can lay claim to reporting the first major doubled die known to me on a 1926 Winged Head Liberty dime; often mistakenly referred to as a Mercury dime. It’s certainly not of the stature of the … Continue reading

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Doubled-die 2015 cent identified

Rodger Ryan is credited with finding what might be the strongest doubled die known so far on the date of a Lincoln cent for the entire 21st century! Only the 2006 Lincoln cent: DDO-001 shows overall stronger doubling of the … Continue reading

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Homestead doubled die count: 60

The discovery of a 2015-P Nebraska Homestead America the Beautiful quarter with a strong doubled die reverse that I reported in the May 12 issue of Numismatic News was just the beginning. Sharp-eyed collectors have added another 59 of these … Continue reading

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Marshals rotated die error found

Numismatic News reader Bill Abernethy is first to report finding a major error on 2015-W U.S. Marshals Service 225th Anniversary $5 proof gold piece. The coin was struck with 68 degree counter clockwise rotated dies. It is the only modern … Continue reading

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Reverse proofs examined

It was no sooner than the March of Dimes Special Silver Sets began hitting the street that owners began reporting relatively minor errors being found on many of the reverse proof dimes. Reverse proof refers to the finish on the … Continue reading

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Error catches eye

Chris Seelke of New York recently opened a 2015-S silver proof set that he ordered about two months ago only to find very unusual doubling on the Louisiana Kisatchie quarter. The doubling is what I refer to as “Displaced Design-Strike … Continue reading

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More 2015-P Nebraska doubled dies reported

In the May 12 issue of Numismatic News, I revealed the discovery of a 2015-P Nebraska “Homestead” America the Beautiful quarter with a strong doubled die reverse. It was first reported by Steve Atwood of Florida on the Coin Community … Continue reading

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