1855 2d BLUE PL.5 WMK LARGE CROWN ERROR IMPERFORATE (SG27a) VERY FINE USED. Very fine used 1855 2d blue plate 5 wmk large crown ERROR IMPERFORATE lettered DK, lightly cancelled London Inland Office numeral. Very fine four margins, right margin only light trace of blind perforations but the only example of this VERY RARE STAMP we have seen or handled in 40 years. PTS Certificate 'SG27a is genuine'. Cat £12,000. (Ref 144593).
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