b'35181181P 1931 Kingsford Smith Imperforate Die proofs of the 2d 3d & 6d stamps in the issued colours on wove paper recessed in a single thick card mount (200x150mm) with bevelled edges BW:141-143DP(2), minor damp spots on the mount, the 3d proof is superb; the 2d & 6d are affected by light staining. Cat. $60,000. Unique! Ex Sir Harry Brown. The ACSC states these are the only finished die proofs for this series: there are no examples in the Australia Post Archives.Provenance: The Arthur Gray Collection, October 2015, Lot 419. .$18,00020,000182182** 1932 (SG.143) 5/- Harbour Bridge, Ash imprint strip of 3, well centred, MUH BW:148zf - Cat $5500.Superb! $3,0004,000'