Tag Archives: british indian stamps

10 Rarest and Unique Postage Stamps of the World (2)

The U.S. “Inverted Airmail” postage stamp (1918) An inverted Airmail stamp has a value of $42, 500. This stamp is also known as Jenny stamp as it has a design of a Curtiss JN-4 airplane that was mistakenly printed upside-down. … Continue reading

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