The Kookaburra Square Penny was planned as a new Australian coinage, a new shape, a new design and the new metal of cupro-nickel. The coins that were produced as part of this test phase were handed to dignitaries and politicians to assess their reaction. But, this particular Square Penny was never going to be passed around or handed over. It was especially struck as a collector’s item in STERLING SILVER for the personal collection of Mr. Albert Malet Le Souef, Deputy Master of the Melbourne Mint. It is unique. This coin is a numismatic prize, a trophy piece. A Square Penny depicting the Type 4 design, struck in Sterling Silver.