Tag Archives: mintmark

Do I Have a 1901/O-S Half Eagle?

Posted on June 15, 2020 by Richard Giedroyc

How can I tell if I have a 1901/O-S half eagle? This overdate variety is known as Breen 6780. It can be identified via the remnant of the curve of a “0” near the upper right of the final “1” … Continue reading →

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Genuine Coins Have “Style”

Posted on May 24, 2019 by F. Michael Fazzari

While it is obvious today that to authenticate a coin, you must know what the genuine coin should look like, at one time this was taken for granted.  When I became an authenticator, I never saw it expressed anywhere!  I am … Continue reading →

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1970-D Kennedy remains volatile

Posted on October 4, 2010 by Paul M. Green

The 1970-D Kennedy half dollar is an important and interesting coin. In today’s market, it may not seem so, but back in 1970 it had quite an impact. Continue reading →

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