"A postcard or post card is a rectangular piece of thick paper or thin cardboard intended for writing and mailing without an envelope. Shapes other than rectangular may also be used. There are novelty exceptions, such as wood postcards, made of thin wood, and copper postcards sold in the Copper Country of the U.S. state of Michigan, and coconut "postcards" from tropical islands.

In some places, one can send a postcard for a lower fee than a letter. Stamp collectors distinguish between postcards (which require a postage stamp) and postal cards (which have the postage pre-printed on them). While a postcard is usually printed by a private company, individual or organization, a postal card is issued by the relevant postal authority." - ( 16.09.2019)

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Postkarte "Festung Namur vor dem Fall"Postkarten mit PferdemotivenPostkarte: Ansichten von Unna umrahmt mit rosa BlütenPostkarte: Teilansichten von UnnaPostkarte: vier SoldatenPostkarte: vier Soldaten vor Germania-Denkmal
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