Stamps, gliders (1968) design type
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Poland
postage1968, May 29 World Gliding Championships 1968 issue - gliders (1968) unwmk p. 9-14.5 (6 stamps)
| X | 60g | multi | Zephyr glider | |||
| X | 90g | multi | Storks | |||
| X | 1.50z | multi | Swallow | |||
| X | 3.40z | multi | Flies | |||
| X | 4z | multi | seal | |||
| - | 5.50z | multi | Pirat glider |
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