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postage
1975, Oct 24 30th Anniversary of the United Nations issue unwmk p. 12x12.5
| - | 20f | multi | .20 | |||
| - | 45f | multi |
1977, May 17 World Telecommunications Day 1977 issue
| - | 30f | yelbrn & org | .20 | |||
| - | 80f |
1980, Jul 19 Olympics 1980 issue
| - | 30f | multi | .20 |
1980, Dec 7 1000th Anniversary of the Birth of Ibn Sina issue
| - | 80f | multi |
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