KEVII 10/- die proof on glazed card BEFORE HARDENING 22 NOV 01 SUPERB

1901 10/- die proof in black on glazed card (62 x 92mm.) dated 22 NOV 01 in blue and marked BEFORE HARDENING. Very Rare. Ex Horton Large Gold Medal Collection. The Chartwell example (Very similar to this one) made 3100 pounds in 2011. Cat 4500 pounds