Stamps of Yemen, 1991
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postage
1991, Mar 18 Mushrooms 1991 issue - mushrooms (1991 Yemen) (no wmk info) (no perf info) (7 stamps)
| - | 50f | multi | Boletus aestivalis | — | — | |
| - | 60f | multi | Suillus luteus | — | — | |
| - | 80f | multi | Gyromitra esculenta | — | — | |
| - | 100f | multi | Leccinum scabrum | — | — | |
| - | 130f | multi | Amanita muscaria | — | — | |
| - | 200f | multi | Boletus erythropus | — | — | |
| - | 300f | multi | Leccinum testaceoscabrum | — | — |
1991, May 22 1st Anniversary of Yemen Republic issue (5 stamps)
| - | 300f | multi | — | — | ||
| - | 375f | multi | — | — | ||
| - | 375f | multi | — | — | ||
| - | 850f | multi | — | — | ||
| - | 900f | multi | — | — |
1991, May 22 Signing of Unity Agreement in 1989 issue (6 stamps)
| - | 225f | multi | — | — | ||
| - | 300f | multi | — | — | ||
| - | 375f | multi | — | — | ||
| - | 375f | multi | — | — | ||
| - | 650f | multi | — | — | ||
| - | 850f | multi | — | — |
1991, May 31 World Anti-smoking Day 1991 issue (6 stamps)
| - | 225f | multi | — | — | ||
| - | 300f | multi | — | — | ||
| - | 375f | multi | — | — | ||
| - | 375f | multi | — | — | ||
| - | 650f | multi | — | — | ||
| - | 850f | multi | — | — |
1991, Jun 26 45th Anniversary of the United Nations issue (5 stamps)
| - | 5r | multi | — | — | ||
| - | 6r | multi | — | — | ||
| - | 8r | multi | — | — | ||
| - | 10r | multi | — | — | ||
| - | 12r | multi | — | — |
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