1931 Kingsford Smith, a mainly mint study including the set of three in imprint blocks of four, 2d. and 3d. overprinted "OS", 2d. Plates 1-8 and 3d. Plates 1-3 in top right corner blocks of four, 6d. imprint block of eight with one showing re-entry (also two used singles) and Air 6d. imprint blocks of six (2, one overprinted "OS") and a block of four with part imprint and showing re-entry. Mostly fine. (109)

Details
1931 Kingsford Smith, a mainly mint study including the set of three in imprint blocks of four, 2d. and 3d. overprinted "OS", 2d. Plates 1-8 and 3d. Plates 1-3 in top right corner blocks of four, 6d. imprint block of eight with one showing re-entry (also two used singles) and Air 6d. imprint blocks of six (2, one overprinted "OS") and a block of four with part imprint and showing re-entry. Mostly fine. (109)