Stamps of Mongolia, 12.25x11.25 perf
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postage
1973, Feb 26 100th Anniversary of World Meteorological Organization issue unwmk p. 12.25x11.25
| - | 60m | multi |
1979, Nov 24 Planet Exploration issue (7 stamps)
| - | 10m | multi | ||||
| - | 30m | multi | ||||
| - | 50m | multi | ||||
| - | 60m | multi | ||||
| - | 70m | multi | ||||
| - | 80m | multi | ||||
| - | 1t | multi |
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