1861 DIE 2 1D PL.64 (AA AB) (SG40) USED ON COVER. 1861 wrapper Kirkmichael to London with pair of die II from the very scarce pl.64 rose-red on white paper (SG40) lettered AA AB, both with corner faults, tied "46" numerals of Blairgowrie. Back stamped KIRKMICHAEL JU 10 1861. Despite damage to stamps an "important" piece because both are MISSING IMPRIMATUR LETTERINGS. (Ref 89138).