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postage
1981, Mar 1 archaeological conference issue (no wmk info) (no perf info)
| - | 75f | — | — |
1981, Apr 1 world tourism conference issue
| - | 75f | — | — |
1981, Sep 15 Rowland Hill (1981)
| - | 75f | — | — |
1990, Sep 18 Ducks 1990 issue - ducks (1990 Yemen)
| - | 75f | multi | Tadorna tadorna | — | — |
1990, Nov 3 Moths and Butterflies 1990 issue - moths and Butterflies (1990)
| - | 75f | multi | Agarista agricola | — | — |
1990, Nov 27 Prehistoric Animals 1990 issue - prehistoric animals (1990 Yemen)
| - | 75f | multi | Phororhacos | — | — |
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