Home / Stamps / Australia & Territories / George V / Kingsford Smith – Airmail OS Kingsford Smith – Airmail OSPrice: $45.00 1931 Kingsford Smith’s Flights Air Mail overprinted OS. SG 139a Fine Used Quantity Add to cart SKU: 100045 Categories: George V, Stamps Specifications Value Appraisal Product Features Additional Products 6d Kookaburra $40.00 BUY NOW Centenary of Western Australia $1.00 BUY NOW PNG 1952 3½d carmine red Papuan Head-dress $5.00 BUY NOW Tristan da Cunha 2004 Merchant Ships SG 805/10 Mint Unhinged $11.00 BUY NOW