Great Britain 1967-68 2s6d-£1 "Castles" (2nd Bradbury Wilkinson printing, No wmk), SG759/62var
Superb unmounted o.g. set of five imperforate imprimaturs (£1 Perf 11x12), including an additional 2s6d (SG 595k, Wmk Multiple Crowns) printed on chalk-surfaced paper, all with "NPM IMPRIMATUR" handstamps on reverse. Very rare.
