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postage
1991, Jun 26 45th Anniversary of the United Nations issue (no wmk info) (no perf info)
| - | 5r | multi | — | — |
1993, Jan 1 1993 surcharges a issue
| - | 5r | multi | ++on=75r | — | — |
1994, Sep 27 4th Anniversary of Yemen Republic issue
| - | 5r | multi | — | — |
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