unmounted mint Block Larger Than four 1971 (Feb.) ½p. on ½d. to 50p. on 10/-, each in a marginal unmounted mint block of ten (5x2) being the bottom two rows of a sheet; one or two with a few split perfs and the 50p. with a piece of margin missing at the lower left corner. S.G. 24-37, #1300. (140)