03.01.1923 |
1st souvenir sheet in the World (Luxembourg) |
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12.09.1930 |
1st souvenir sheet in Germany |
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05.10.1955 |
1st postage stamp in the World printed on aluminium foil (Hungary) |
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12.12.1958 |
1st sovenir sheet in the World printed on synthetic silk (Polska) |
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29.12.1956 |
1st 3-D postage stamps in the World (Italy) |
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