01 July (German East Africa ) within release British Occupation of Mafia Island goes into circulation Stamp SMS "Hohenzollern" overprinted "G.R. POST 6 CENTS MAFIA" face value 6 East African cent
| Stamp SMS "Hohenzollern" overprinted "G.R. POST 6 CENTS MAFIA" in catalogues | |
|---|---|
| Michel: | Mi: DR-OAM B19 |
Stamp is square format.
imprint on michel DR-OA 20 with a new black, purple or green letterpress print 26:17 perforation holes