1840 1d. black Plate 7 Experimental thin paper, S.G.AS44c,

DA/EB marginal block of 4 from the left of the sheet, small part of the marginal inscription '(Ce)ment', manuscript '24lb' in the margin indicating the paper weight, large margins, exceptional colour, light horizontal crease through the upper pair, some gum wrinkles, fresh, unmounted original gum. B.P.A. Certificate 2006. PROBABLY THE FINEST MINT BLOCK OF THIS PLATE ON EXPERIMENTAL PAPER.