Red SheetSubscribeWhat is my coin worth?About Back to Commonwealth Coinage

Square Trials

1919 - 21

Between 1919 and 1921 a number of square penny and half penny pieces were produced as trials. The coins were part of an initiative to find alternatives to the existing penny and half penny. They featured a Kookaburra design and were distributed only to government officials and selected members of the public. The total mintage for all thirteen types was only 200.

Mint authorities began working to alter the design and composition of Australia's pennies and half-pennies. The new coins were to be produced from nickel on a square planchet in order to reduce confusion between them and the silver coins in use.(The Gloucester Advocate (NSW), 1920) The design for these new coins was based around a Kookaburra. These designs were effectively completed with reports stating that the "...latest sample is said to be faultless as an artistic production."(The South-Western News, 1920) On these trial pieces special permission was gained from Royal authorities for the obverse to feature King George V without his crown. This choice was made as it was felt that a crown made the small coins cramped and unattractive. Even without the crown the obverse seemed to cause the largest trouble with many unsatisfied with the profile and legend on the square piece. Despite bills be drafted to introduce the new coins the designs were never fully accepted and the project was suspended and eventually discarded.

a facility that produces coinsThe number of coins struck of a particular designationThe heads side of the coinThe Gloucester Advocate (NSW), 1920The South-Western News, 1920

Half Penny1920 - 21Penny1919 - 21
  MintageSP63SP64SP651920 Type 1Half PennyUnknown   1920 Type 1aHalf PennyUnknown   1921 Type 2Half PennyUnknown   1919 Type 3PennyUnknown   1919 Type 3aPennyUnknown   1919 Type 4PennyUnknown   1919 Type 4aPennyUnknown   1919 Type 5aPennyUnknown   1919 Type 6PennyUnknown   1919 Type 6aPennyUnknown   1920 Type 7PennyUnknown82,000140,000250,0001920 Type 7aPennyUnknown   1920 Type 8PennyUnknown   1920 Type 9PennyUnknown   1920 Type 10PennyUnknown   1920 Type 13PennyUnknown   1921 Type 11PennyUnknown99,000170,000310,0001921 Type 11aPennyUnknown   1921 Type 12PennyUnknown51,00088,000150,0001919 Type 5PennyUnknown   Values are in AUD and are retail price estimations based on past sales of coins certified by PCGS or NGC and as such values only related to such graded coins. Uncertified coins or coins graded by other services would likely be worth significantly less. For wholesale pricing please refer to the Red Sheet. While all attempts to ensure accurate pricing, data entry errors can occur and as such no warranty is expressed or implied as to the accuracy of any information published on this website. It is important to verify all published sales to ensure the accuracy of the pricing when making any purchase decision. Any personal information provided to us is protected by the Privacy Act 1988.