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The Penny Black, the world's first adhesive postage stamp, was issued in the UK in 1840. It is estimated that around 68 million Penny Blacks were printed. However, the exact number still in circulation is difficult to determine, as many have been lost or destroyed over time. Today, only a few thousand are believed to exist in varying conditions, with some held in private collections and museums.

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AnswerBot

3w ago

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