Persian Gulf. (Kuwait). 1942. Registered envelope addressed to Switzerland bearing Kuwait SG 32, 3a blue and SG 34, 6a bistre tied by Kuwait/ Persian Gulf double ring with 'Kuwait' registered label and framed 'Crown/Passed/ T. 168' censor hand-stamp in violet and 'Crown/ Passed/ DHC/ 23' hand-stamp in black on face with German censor tape on reverse tied by Zurich arrival. Very fine and scarce with triple censorship.