Charles III's postal stamp was revealed about 2 weeks ago, unlike

After Queen Elizabeth II, it's Charles and two more kings - Los Angeles Times

King Charles III: First stamps featuring monarch unveiled

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Changes to Stamps, Coins, Bank Notes & Post Boxes for the Reign of King Charles III

The new queen goes to Christmas Eve church services, more of the best pictures from the first year of King Charles III's reign, Gallery

First stamps to bear King Charles's silhouette to be released, King Charles III

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How King Charles III's first stamp breaks with royal tradition

26A - 1857-61 3c Washington, Perf 15 - Mystic Stamp Company