A mint condition Inverted Jenny sets new record for the most-expensive U.S. stamp with a $2 million sale at Robert A. Siegel Auction Galleries
The Un-Inverted Jenny - Freestampmagazine - Stamp Collecting Blog
Why a single 'Inverted Jenny' stamp sold for $2 million at auction
A Rare 'Inverted Jenny' Stamp Sold for a Record-Breaking $2
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Rare Inverted Jenny U.S. Postage stamp sold at auction for record-breaking $2 million to NY collector : r/interestingasfuck
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Wilton Stamp Company
Inverted Jenny - Wikipedia