Stamps of Mongolia, 15 Dec 1974
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postage
1974, Dec 15 Environmental Protection 1974 issue unwmk (8 stamps)
| - | 10m | multi | Vanellus vanellus, p. 11 | |||
| - | 20m | multi | p. 11 | |||
| - | 30m | multi | p. 11 | |||
| - | 40m | multi | Pelecanus crispus, p. 11 | |||
| - | 60m | multi | p. 11 | |||
| - | 80m | multi | p. 11 | |||
| - | 1t | multi | p. 11 | |||
| - | 4t | multi | — | — |
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