British Solomon 1907 ½d Imperforate at Right Block UM

1907 Large Canoes ½d ultramarine IMPERFORATE AT RIGHT (SG 1var). Superb UM horizontal bock of eight with variety IMPERFORATE AT RIGHT BETWEEN STAMP & MARGINS. A rarity. Photo-cert: Eichele BPB: "An impressive block with a rare variety. Exceptionally fresh." Ex Sir Gawaine Baillie. See additional image and of certificate below.