Great Britain 1913 10s Indigo-blue "Seahorses", SG402var.
Superb unmounted mint with full original gum top left hand corner marginal horizontal pair printed by Waterlow. Bearing an unusual perforation variety caused by multiple strikes of the perforation comb in the sheet margin with the vertical perforations extending down to the stamps below and resulting in multiple vertical perforations.
A magnificent and very unusual multiple.
GB Specialised Catalogue No: N69(1)var.
