South Africa 1926 4d Triangular Proofs on Bradbury Card

1926 4d Triangular (SG 33): Bradbury Wilkinson presentation card bearing IMPERF PLATE PROOF examples of the English and Afrikaans single stamps each in a differing shade of near-issued grey-blue. The card crossed by fold below the top proof, sympathetically supported with archival tape. Light tone spots to card, the proofs unaffected and themselves of fresh vibrant colour. A rare & desirable representation of proofs for this popular issue. (108x164mm). See scan.97