The Type I ten cent was issued from 1966 to 1984 with an additional
striking in silver in 2006 as part of the 40th anniversary of
coinage set. The obverse features the Arnold Machin portrait of HM Queen Elizabeth II and the reverse features Stuart Devlin's lyrebird design. Devlin's initials (SD) can be found to the right of the birds foot.
The issue was struck at the Royal Australian Mint in all years with additional assistance provided by the Royal Mint London in 1966 to assist with the huge demand for new currency as a result of the vast amount of
currency withdrawn. To distinguish between the 1966 London and Canberra pieces one must look toward the three feathers at the top of the coin. On the central feather the London minted coins feature an additional spur compared to the Canberra coins (see below).
In 1981, the Wales mint assisted with striking coins to meet the additional demand for circulation currency brought about by the economic boom of the 1980s.