Persian Gulf. (Bahrain). 1957. Registered Air Mail envelope addressed to Durban, South Africa bearing SG 102, 1 n.p. on 5d brown, SG 103, 3 n.p. on 1/2d orange, SG 105, 9 n.p. on 1 1/2d green, SG 106, 12 n.p. on 2d brown, SG 108, 20 n.p. on 3d lilac, SG 109, 25 n.p. on 4d ultramarine and SG 111, 50 n.p. on 9d bronze tied by Awali/Bahrian date stamp with matching registered label. Nice destination.