The 1921 Type 12 Square Pennies are said to be the "most available" in the series.
But let's be clear on this one. They are NOT the most available once you start to factor quality into the selection process, because most Type 12 Square Pennies have flat, lifeless surfaces. They tone badly and many of them have unsightly black marks in the fields making them aesthetically quite challenging.
It has to be remembered that the Square Pennies were test pieces struck to assess public opinion. Given to dignitaries to assess their reaction, there was no packaging and we know that not every dignitary was a collector and would have handled them with care. Some of the coins must have been tucked into a fob pocket for they have circulated. Others could have rattled around a top desk drawer. Or passed around to colleagues ... introducing multi possibilities of mishandling.
This coin is the absolute exception. It is a once in a decade opportunity.
The Square Kookaburra coins were thrown into the spotlight in 1954 when Sir Marcus Clark K.B.E. sold his extensive and famous collection of Australian coin rarities. It is on record that his 1921 Square Penny and 1921 Square Halfpenny sold for £36.
Even more interesting is that in the same auction an Extremely Fine Ferdinand VII Holey Dollar sold for just over twice that amount at £72 10/-. The investment potential of the Square Penny and Square Halfpenny lies in the fact that the Holey Dollar is now a $450,000-plus item.
The popularity of the kookaburras continued throughout the 1960s and 1970s with extensive reporting of their appearances occurring in the then industry magazine, 'The Australian Coin Review'.
Strong collector and investor interest in the Square Kookaburra coins continues to this very day.
That demand for the Square Kookaburra coins spans more than half a century is comforting for new buyers entering the market.
The Melbourne Mint commenced striking Australia's Commonwealth copper pennies in 1919. No sooner had the mint started issuing the coins, than it was directed by Treasury to commence testing an entirely new penny concept, a square coin made from cupro-nickel.
The introduction of the Kookaburra Square Penny underpinned an attempt by the then Labor Government to stir up national sentiment post World War I. To evoke the great 'Aussie' spirit.
If you think about it. Putting the nation’s native bird - the kookaburra - onto a coin was a no-brainer to achieving that goal.
A drastically changed shape, a square. And a new metal, cupronickel was part of the total package to maximise impact on the population.
The proposal was contentious in that the monarch, King George V, was to be depicted on the obverse without a crown. Some say it was the rumblings of a Republican movement way ahead of its time.
Tests commenced at the Melbourne Mint in 1919 with the test pieces ultimately passed to dignitaries and Government officials to assess their reaction. Sadly, in 1921 and after three years of testing, the scheme fell apart.
The response to Australia’s square coinage was poor with widespread public resistance to change and people generally rejecting the small size of the coins.
However, the final decision not to proceed seems to have been based mainly on another consideration – the large number of vending machines then in operation requiring a circular coin.
It is noted that the Kookaburra Square Pennies tone, some more strongly than others, a reflection on their storage in the intervening years. A Square Penny with minimal, attractive toning and beautiful surfaces is a joy to behold.
As with the Holey Dollar, Dump, Adelaide Pound and 1930 Penny, the Square Penny is a classic Australian coin rarity. Collector interest is driven by its novel shape, its historical importance and its extreme scarcity.