used 6d. dull lilac, watermark inverted, from lower-left corner of the sheet, enormous at right, just clear or touched at top, fine light part strikes of the London Inland Office "28" numeral; a few natural paper flaws, a little soiled on reverse, fine and very attractive. S.G. Spec. H3(2)e, £550. Photo

Details
used 6d. dull lilac, watermark inverted, from lower-left corner of the sheet, enormous at right, just clear or touched at top, fine light part strikes of the London Inland Office "28" numeral; a few natural paper flaws, a little soiled on reverse, fine and very attractive. S.G. Spec. H3(2)e, £550. Photo