More to explore:
Koala stamp, Australia | Flickr - Photo Sharing!
Sweet Songbirds of Australia
AUSTRALIA post stamp
A greeting Christmas stamp printed in Australia shows Madonna with child, 2004
AUSTRALIA - CIRCA 1991: A stamp printed in Australia shows image of a kitten, circa 1991
Australia's own champion racehorse Black Caviar.
Australian Stamp - kangaroo
Universal Postal Union stamp / John Copeland / 1974