ABU DHABI: 'DAS ISLAND ABU DHABI TRUCIAL STATES/ 2 ' cds tying British Post Offices in Eastern Arabia 5r on 5/- red SG 93 well centred & very fine block of 4 (+ 20np on 1d & 1r on 1/6d) to a linen-backed piece, Cat £300+. [Das Island was the site of the first major oil discovery in the southern Arabian Gulf, on which the great wealth of Abu Dhabi is based]