Persian Gulf. (Bahrain - Postage Due). 1952. Air Mail envelope written from Sussex addressed to 'P.O. Box 348, Awalai, Bahrain Island, Persian Gulf' bearing Great Britain SG 470, 6d purple tied by Littlehampton date stamp '10th June 1952', underpaid with hand-stamp 'Surcharge '6' Annas To Pay' on face. Very fine and scarce Bahrain tax hand-stamp.