Stamps of Sudan, Association for the Promotion of Scientific Innovation issue
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postage
2002, Feb 14 Association for the Promotion of Scientific Innovation issue (no wmk info) (no perf info)
| - | 100d | blk & multi | — | — | ||
| - | 150d | red & multi | — | — | ||
| - | 200d | grn & multi | — | — |
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