Great Britain 1967–68 2s6d–£1 “Castles” (Bradbury Wilkinson printing, no watermark) imprimatur set, SG759/62var.
A superb unmounted mint, with full original gum, set of four, comprising imperforate imprimaturs except for the £1 value, which is officially perforated 11 × 12.
All bear “N.P.M. Imprimatur” handstamps on reverse.
The unique imprimatur set of this issue in private hands. These were released in the National Postal Museum Archive sales in 1984/5.
GB Specialised Catalogue Nos: T7var, T13var, T19var & T25var.
SG catalogue value: £20,000.
