Stamps of Sudan, 11 base day
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postage
1966, Jun 11 wmk. mult SG p. 11.5x11
| - | 15m | WHO HQ | .20 | |||
| - | 3p | WHO HQ | — | — | ||
| X | 55m | WHO HQ | — | — |
2007, Feb 11 50th Anniversary of the African Football Union issue (no wmk info) p. 13.5
| - | 200 | multi | — | — | ||
| - | 350 | multi | — | — | ||
| - | 450 | multi | — | — |
airmail
1935, Mar 11 1935 air issue (6 stamps)
| - | 15m | on 10m (13) | .20 | |||
| - | 2pia | gray & purbrn | w. mult SG, p. 11.5x12.5 | — | — | |
| - | 2 1/2Pia | brn & grn | ++on=3m, w. mult SG | — | — | |
| - | 2 1/2Pia | grn & blk | ++on=5m, w. mult SG | — | — | |
| - | 7 1/2Pia | gray & purbrn | w. mult SG | — | — | |
| - | 10pia | gray & purbrn | w. mult SG | — | — |
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