STUDY OF 1917-20 "WAR TAX" OVERPRINTS: The various mint ranges incl. control & positional blocks and some varieties. Mounted mint on album pages includes 1917 1½d on 2½d blue SG 53 incl. marg. block of 6, SG 54 plate block of 12 showing vars. "no fraction bar" (SG 54a) and "straight serif" (SG 54b); addl. example of 54a in pair. Further examples of ½d green SG 57 (7), 1½d on 2d grey (6) and 1½d on 2½d orange (6). Lot also incl. ¼d brown SG 40 in control block of 6. (c.67 stamps) (Image)