1840SG.2, Penny Black (black), a stunning block of six, ample to fine margins, unused, lettered LD-MF, from scarce plate 11 (!); usual original folds, in L margin stamps LE small split, one of the premier unused multiples, intense color, stamp MF luxury, mint never hinged, according to the N. Granger (BPA) "...important rarities", ex. Sir H.Cripps, ca. £330.000, unrepeatable offer, first class rarity