Persian Gulf. (Aden). 1934. Registered Advertising envelope written from Bhora Bazar Camp, Aden addressed to Switzerland bearing India SG 155, 1/2a green, SG 174, 4a olive and SG 177. 6a bistre tied by Aden camp/ Reg double ring '28th Feb 34' with Aden Camp registration label on reverse and Dubendorf arrival '12th Mar' on reverse. Very attractive item of registered mail from the Gulf.