1967 Decimal Currency surcharges, study of the overprint varieties comprising 60d (12), 1r (6) and 3r (2) all used, including scarce 60d "DIRHRMS" error (S.G. 240a, unpriced by S.G.), 60d misplaced overprint, also raised letters, thick and thin lettering, broken letters, etc. S.G. 240/1, 243. (20). Photo on Page 120. (Image1)