Stamps of Mongolia, 20 Jun 1977
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1977, Jun 20 11th Anniversary of Intercosmos issue unwmk (8 stamps)
| - | 10m | multi | p. 12x12.25 | |||
| - | 20m | multi | p. 12x12.25 | |||
| - | 30m | multi | p. 12x12.25 | |||
| - | 40m | multi | p. 12x12.25 | |||
| - | 60m | multi | p. 12x12.25 | |||
| - | 80m | multi | p. 12x12.25 | |||
| - | 1t | multi | p. 12x12.25 | |||
| - | 4t | multi | — | — |
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