4c Grey. ERROR: "Perforation 14 1/2 x 14".
An incredibly fresh and fine used example of this major KGVI rarity with bright colour and full perforations on all sides. Neatly cancelled with light part c.d.s. in upper right corner leaving most of the profile clear.
Extremely Rare and Outstanding Quality.
A most handsome example of this "key" B.V.I. rareity of which no unused examples exist.