3902 1917 KGV 1d WAR TAX, error type 40 opt in black DOUBLE. VF MUH. SG 140a cat £180 as M should be at least double, £360 as MUH. BPA photo-cert from original blk of 4. (P) $200 $300
3903 1917 KGV 1d WAR TAX, error type 39 opt DOUBLE. F-VF MUH, UL cnr marg. SG 143i cat £48 as M, should be at least double, £96 as MUH. 2006 BPA photo-cert. (P) $50 $70
3904 1918 KGV 3d WAR TAX error type 40 opt in red DOUBLE. Superb fresh MUH. SG 145a cat £325 as M, should be at least double, £650 as MUH. 2006 BPA photo-cert. (P) $300 $400
