Stamps of United Nations - UN offices in Vienna, 11.5 perf
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postage
1984, May 29 UN work for Refugees issue unwmk p. 11.5
| - | 4.50s | multi | ||||
| - | 8.50s | multi |
1992, May 22 Environmental Conference in Rio issue
| - | 5.50s | multi | ||||
| - | 5.50s | multi | ||||
| - | 5.50s | multi | ||||
| - | 5.50s | multi |
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