Persian Gulf. (Bahrain). 1962. Envelope addressed to 'Lloyd's Register of Shipping, Bahrain' bearing SG L7, 5p green, SG L8, 10p carmine, SG L9, 10p grey, SG L10, 20p blue, SG L11, 30p slate and SG L12, 40p ultramarine tied by bilingual Manama (Bahrain) date stamp.