Dienstmarken
Sudan, Postfrisch
1959. SUDAN. OFFICIAL. 10 PT STACK LABORATORY overprinted S.G. in black, never hinged.
Michel Dienst 65b
Sudan, Postfrisch
1962. SUDAN. OFFICIAL. Country motives complete set OVERPRINTED with 14 stamps never hinged.
Michel Dienst 68-81
Sudan, Brief
1900. SUDAN. 5 MIL overprinted SOUDAN and with perfin S.G.
Michel Dienst 1
Sudan, Brief
1959. SUDAN. OFFICIAL 2 + 3 PT overprinted S.G. on official cover to Denmark cancelled KHARTOUM 24 FEB 1959. Unusual destination.
Michel Dienst 58-59