1966, Gazelle, Oil Rig and Camel, surcharged issue with three bars over Sultan's portrait, 5f/5np-1d/10r, complete set of 11 in bottom right corner sheet margin blocks of four (100f/1r with right margin only), post office fresh quality, full OG, NH, VF, C.v. $1,090, SG #15/25, £1,200, Est. $500-$600 (Image)