232 232 P. DIE PROOFS: Imperforate Die proofs of the 2d 3d & 6d Kingsford Smith 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 from the adhesive used to affix them to the backing, 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.������������������������������������������������� $25,000–30,000 233 233 **. 1931 2d Kingsford Smith overprinted OS (SG.O123) marginal block of (4) from the left of a sheet, MUH. BW:141(OS) - Cat.$1300.������������������������������������������������������������������������������������������������������������������������ $400–500 Images Lot numbers in black indicate that images are not illustrated in this catalogue but are available online at www.leski.com.au 36