Persian Gulf.(Bahrain - Pakistan - Postage Due). 1953. Pakistan postal stationery Air Mail envelope upgraded with SG 56, 3a purple tied by Sangrdha double ring addressed to 'The Postmaster, Bahrain, Persian Gulf,' endorsed 'via Karachi', underpaid with circular 'T' hand-stamp with m/s '12c' and hand-stamped 'Surcharge (2) Annas To Pay' on face with Bahrain arrival '30th Dec 53' on reverse. Very fine and scarce Tax hand-stamp from the Gulf State of Bahrain.