#115 Australia 09/03/15
This issue of two AAT stamps is part of a world wide initiative involving more than 30 national postal administrations highlighting the importance of the Earth’s poles and glaciers and how global warming may affect them.
The $2.05 stamp features a jade iceberg highlighting the unique beauty and elemental nature of Antarctica. As part of this stamp issue, a special ice crystal logo has been designed by Saku Heinänen of Finland and will appear on the stamps of participating countries. cited from here