1915-16 £1 ultramarine and brown, vertical strip of three (overprint types "ABC"), top and bottom stamps hinged, middle stamp n.h., top stamp with faint toning and bottom stamp with a gum crease (neither mentioned on accompanying certificate), otherwise fine-v.f. and rare strip, with clear 1988 BPA certificate (SG 85; catalogue value for singles) cat. £2250 (Cat No. 10) (Image)

Cat. £2250, Est.US$750