unmounted mint Block Larger Than four  -- 18p. bright green, FCP/PVAD, one band, an unmounted mint block of twenty (5x4) from lower-left corner of the sheet with cylinder "12.", variety partially perforated and containing four completely imperforate horizontal pairs; tear at lower left affects one stamp, otherwise fine. Thought to be a unique positional piece. S.G. X913, X913a, £1500+. Photo
VAT rate of 17.5% is payable on hammer price plus … Read more
unmounted mint Block Larger Than four -- 18p. bright green, FCP/PVAD, one band, an unmounted mint block of twenty (5x4) from lower-left corner of the sheet with cylinder "12.", variety partially perforated and containing four completely imperforate horizontal pairs; tear at lower left affects one stamp, otherwise fine. Thought to be a unique positional piece. S.G. X913, X913a, £1500+. Photo

Details
unmounted mint Block Larger Than four -- 18p. bright green, FCP/PVAD, one band, an unmounted mint block of twenty (5x4) from lower-left corner of the sheet with cylinder "12.", variety partially perforated and containing four completely imperforate horizontal pairs; tear at lower left affects one stamp, otherwise fine. Thought to be a unique positional piece. S.G. X913, X913a, £1500+. Photo
Special notice
VAT rate of 17.5% is payable on hammer price plus buyer’s premium.