Great Britain SG 540/556 Unmounted Mint 1955-58 set of 18 cylinders blocks watermark St Edward's Crown

1955-58 set of 18 to 1s6d, wmk St Edward's Crown, lower left corner cylinder blocks of 6 (2x3) comprising '1 Dot' (4d, 5d, 10d, 1s3d, 1s6d), '1 No dot' (9d, 11d), '2 Dot' (7d), '2 No dot' (½d), '3 No dot' (6d, 8d) '4 Dot' (1d, 1s), '7 Dot' (2d red-brown), '14 Dot' (1½d), '16 Dot' (2d light red-brown), '17 Dot' (3d), and '46 Dot' (2½d), unmounted o.g. Minor gum yellowing (mostly confined to margins) and the 1s6d with small ink mark in lower margin, still highly attractive and very scarce in this matching positional form with the 3d showing a second strike of the perforating comb at foot. (Spec cat £1607) - P267001452