Author Archives: Ken Potter

Close AM cent found by reader

A fourth specimen of the elusive 1992 Philadelphia Lincoln cent struck with a “Close AM” (of AMERICA) design style reverse has been reported to this author.
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Do you have third platinum error?

If you happened to buy a proof 2007-W half-ounce platinum American Eagle, now is the time to dig it out and see if it exhibits a die polishing error as the quarter-ounce and ounce coins do. Continue reading

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Gold found tripled

A tripled-die 1892-CC $10 gold piece has been identified by Numismatic Guaranty Corp. Continue reading

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Doubling but no doubled die

David S. Brenner of Delaware found what appeared to be a bona fide strong doubled die on a 2010 Grand Canyon 5-ounce silver bullion coin showing in images he sent to Numismatic News.  It wasn’t. Continue reading

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Cent errors show drama of minting

In recently discussed many ways to collect errors and varieties, one of which being an assemblage of one of each error-variety type that is possible within a series. I’d like to show more of the types that a collector might want to add to his or her collection. Continue reading

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Plain edge on Buchanan $1

A James Buchanan Presidential dollar has been found with a plain edge. So far, it is the only one reported. Continue reading

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More scrutiny finds more rays

More extra rays in Liberty’s crown have been found on Presidential dollar coins. Continue reading

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One extra ray in Liberty

Eagle-eyed variety coin aficionado Rich Darby of New York State has found a Denver version of a Thomas Jefferson Presidential dollar with a die clash resulting in an aberration that makes the rays in Liberty’s crown (on the reverse) appear to have an eighth ray where there are normally seven. Continue reading

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Dropped letter error on Polk $1

A 2009-P James K. Polk Presidential dollar with dropped “T” letter on the edge has been found by John Morris of Florida.
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Half shows error

Strike-through errors are among a number of interesting errors that turned up recently. Continue reading

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