Here’s something for serious stamp collectors only. This summer, philatelists will have a chance to snag the rarest US stamp ever: the 1868 one-cent “Z-grill.” Interested? It’ll cost you (more than) a ...
History, intrigue and a misprint combine so that a single stamp has sold for $2 million at auction. What is it? Well, at the basic level, it is a U.S. postage stamp from 1918. But this stamp's got ...
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