Stamps of Oman, 8 Apr 1981
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postage
1981, Apr 8 1981 overprints issue ovpted unwmk p. 11.75
| - | 20b on 150b | multi | sultan & patrol boat | — | — | |
| - | 30b on 750b | multi | Military Horsemen | — | — | |
| - | 50b on 75b | multi | Bab Alkabir | — | — | |
| - | 100b on 500b | multi | Omani Women | — | — |
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