unused Block Larger Than four Dull red unused lower left corner block of ten, [57-90], with full sheet margins; small split along watermark line at top, otherwise fine. S.G. 14, £420+

Details
unused Block Larger Than four Dull red unused lower left corner block of ten, [57-90], with full sheet margins; small split along watermark line at top, otherwise fine. S.G. 14, £420+