Persian Gulf. (India used in Aden). 1889. Envelope addressed to Bombay bearing India SG 93, 3a brown-orange tied by Aden Cantonment squared circle 'Jan 14 89' with adjacent Sea Post Office/ E date stamp 'Jan 10'.
Very interesting item. Perhaps originating in another Gulf State with Sea Post Office transit '10th January and carried to Aden 'January 14th 1889.