Penny Black
The Penny Black was the world's first adhesive postage stamp used in a public postal system. It was first issued in the United Kingdom on 1 May 1840 but was not valid for use until 6 May.
The Penny Black was the world's first adhesive postage stamp used in a public postal system. It was first issued in the United Kingdom on 1 May 1840 but was not valid for use until 6 May.
The Penny Black was the world's first adhesive postage stamp used in a public postal system. It was first issued in the United Kingdom on 1 May 1840 but was not valid for use until 6 May.
Source: Wikipedia "Penny Black" · CC BY-SA 4.0
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