Gwoja Tjungurrayi features on our $2 coin and was the first living Australian to feature on a postage stamp. It turns out he made his stamp debut much earlier.
A new set of postage stamps pays tribute to the male voices of Australian sports commentary - but there have long been female sports broadcasters and their voices are getting louder.
For most of us stamps have become infrequent objects of daily life but they continue to be produced, and collected by devotees – so what do they say about us as a nation?