cover 1903 (22 Jan.) unstamped envelope to England, headed "On Active Service Somaliland, No Stamps Available", showing unframed "ACTIVE SERVICE./UNPAID" h.s. in purple, London "1D/I.S./F." with, on reverse, "OBBIA" single-ring d.s. (shows inverted "G" for first "B") and Aden transit d.s. (28.1). Rare. Photo