unmounted mint Block Larger Than four 1/- lower left corner block of twenty-four (4 x 6), showing double dot over country name [31], extra flagstaff [49] and vertical line in sky [56], unmounted mint; a few short or blunt perfs. and trivial creasing in the lower left corner. A rare and important multiple and probably the largest block containing the extra flagstaff variety extant. S.G. 142a, £2660+++. Photo