cover 1915 (Dec.) envelope (small faults) posted at Khartoum apparently from a German national interned in Sudan, addressed to Germany via the Red Cross in Geneva, franked at 1pi., showing Shellal-Halfa T.P.O. No. 2 c.d.s., pink Censor label at top and three-line Red Cross cachet in red; upon arrival in Germany the envelope was reopened and resealed with Censor label and shows German Censor cachets. A very rare cover emanating from Sudan. Photo