Lot 71154 – 1921, Port Royal, 6d carmine and brown, vertical pair,

1921, Port Royal, 6d carmine and brown, vertical pair, imperforate colour trial proof, printed on card, mounted on brown card, with the addition of number « 12 » below, prepared by De La Rue & Co., with a « Specimen » handstamp in black, very fine and a rare example from the De La Rue archives.