Australia 1931 1d Green Kangaroo and Map Official Stamp

Australia · 1931 · 1d

This definitive stamp features the iconic Kangaroo and Map design, a symbol of Australian nationhood first introduced in 1913. This specific version is overprinted with the letters 'OS' in black, designating it for official government use. The design shows a kangaroo standing over a map of Australia, set within an ornate frame.

Issued during the interwar period, these 'OS' (Official Service) overprints were a common method for governments to control and account for official postage, preventing misuse of government resources.