Great Britain 1855 4d deep carmine imprimatur Plate 1 on deeply blued paper, SG62var.
A very fine and fresh unused top marginal imperforate imprimatur from the very first approved printing sheet.
The 4d value was first introduced to prepay letters to France. Plates 1 and 2 were used, and were put to press on 13 July 1855.
Very rare, one of only 24 possible examples, many of which are in institutional collections.
Accompanied with a 1989 Royal Philatelic Society (RPS) Certificate of Authenticity.
