Details
unmounted mint Block Larger Than four 1966 (May) 5c. on 4d., a block of twenty (2x10) with surcharge omitted, being the last two vertical rows of the sheet showing plate and sheet numbers, fine unmounted mint. Very rare. S.G. 277a, £4500
Further details
Note: One sheet exists and the stamp can only be distinguished from the 1965 4d. when in a vertical strip of ten. The 1965 4d. was printed in sheets of sixty (10x6).