<Tr> <Th> Design date </Th> <Td> 4 October 1995 </Td> </Tr> <P> The Australian fifty - dollar note is an Australian banknote with a face value of fifty Australian dollars (A $50). It is currently a polymer banknote, featuring portraits of David Unaipon and Edith Cowan . </P> <P> There was no fifty dollar note released as part of the initial rollout of decimal currency in 1966, but inflation necessitated its introduction seven years later in 1973 . </P> <P> The original paper fifty dollar note, designed by Gordon Andrews, has a scientific theme . On the front of the note is a portrait of Australian pathologist Howard Walter Florey, Baron Florey and scenes of laboratory research . On the back is a portrait of Sir Ian Clunies Ross, veterinary scientist and first chairman of the CSIRO, along with scenes from the Australian environment . </P>

When did the $50 note come out in australia