This surprising stamp size reflected Australia's pride in it's Antarctic exploration.
The three men shown in the design are (left to right);
Peter Shaw, Meteorologist.
Phillip Law, Director, Antarctic division, External Affairs Dept,
Dr Arthur Gwynn . Orthinologist .
Issued: March 27th 1957.
Unwatermarked, Perf 14½x14¾ (this is opposite to what I expect).
The printers had fun with this issue, it is a simple doubling of the Medium Type A (portrait) layout. The centre comb pins being removed to avoid perforating the centre. Printsheet of four post office sheets, each single-pane, 12 rows of 5 (60 stamps).