2d, black and grey-black. Major variety IMPERFORATE BETWEEN, HORIZONTAL STRIP OF THREE. Left marginal, exceptionally fine and fresh mint. A GREAT ADMIRAL RARITY. SG 256b
Note: one sheet showing this variety is believed to have been issued, resulting in six possible strips. Of those, one is recorded as having been used, and as far as we are aware only four other unused examples have survived. Of those two have faults, and this marginal strip may well be the finest extant.