Stamps of Niger, 11 May 1970
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1970, May 11 aviation pioneers (1970) unwmk p. 13 (5 stamps)
| - | 50fr | multi | Clement Ader | |||
| - | 100fr | multi | Montgolfier | |||
| - | 150fr | multi | Isaac Newton | |||
| - | 200fr | multi | Galileo Galilei | |||
| - | 250fr | multi | Leonardo da Vinci |
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