Stamps of Poland, scientific expeditions design type
1 to 6 of 6
postage
1980, May 22 scientific expeditions unwmk p. 9-14.5 (6 stamps)
| X | 2z | multi | caverns | |||
| X | 2z | multi | seals | .20 | .20 | |
| X | 2.50z | multi | Mongolia ethnology | |||
| X | 2.50z | multi | Syria archaeology | |||
| X | 6.50z | multi | mountaineering | |||
| X | 8.40z | multi | paleontology |
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