unused 4d. deep blue, a handsome unused strip of four with clear to large margins all round; the third stamp has a light vertical crease and the fourth a small worm hole. The largest recorded unused multiple. R.P.S. Certificate (1971) states that the strip is regummed, an opinion we do not share as the gum is the normal matt mucilage found on the very few known unused pieces of this issue. S.G. 21. Photo