Auction 333-341 Western Australia & Great Britain - Day 3

1864/79: 1 d. rose-red, plate 225, lettered NG-NI / OG-OI, an unused block of six from this rare plate, of fresh colour, fine large part og. A magnificent and excxeedingly rare multiple Gi = £ 18'000+.
Provenance: from the re-joined Gwatkins block KG/OL; Robson Lowe, 4-5. Oct. 1944; Collection A Friedman, Harmer, 8. Dec. 1958, lot 19; Harmer, 25. Oct. 1971, lot 108; Phillips, Dec. 1988, lot 412; Collection 'Great Britain The Line Engraved Issus 1840–1870', The Åke Rietz Collection, Corinphila 7 June 2023.