Lot 301, Aden 1937 Dhow set perforated SPECIMEN, VF NH, sold for $518 July 24, 2020November 18, 2017 by Sparks Auctions Lot 301 Aden #1S-12S 1937 ½a to 10r Dhow Set Perforated SPECIMEN, mint never hinged, fresh and very fine centered set. S.G. catalogue value is £700. Scott CV U$750, sold for C$450 plus buyer’s premium.