On the 50th anniversary of Australian decimal currency, the Royal Australian Mint’s released a special series of coins commemorating the earlier, pre-decimal currency of the country. The modern circulating designs were joined by depictions of Australia's pre decimal coins on the obverse.

The story of Australian currency runs parallel with the nation's history of progression. As early European settlers improvised a monetary system, international coins, promissory notes and the infamous rum trade were all visible in the early 1800s. The first coins "minted" in Australia were created by removing a piece from the centre of a Spanish dollar, forming two separate coins known as the Holey Dollar and Dump.

The gold rush of the mid-19th Century resulted in many unofficial tokens and ingots until the Sydney Mint opened in 1855, producing sovereigns which were largely identical to their British counterparts. This English influence remained strong and the new national currency of 1910 inevitably emulated English pounds, shillings and pence.

On 14 February 1966, the changeover to decimal currency transformed the nation, as Australia joined a worldwide currency trend. The uniquely Australian images of the decimal coins are still cherished on their 50th anniversary.

As a tribute to Australia's coin history, each coin of the Changeover series features depictions of coin designs from today and years past. The two dollar coin shows a Crown design (coins of the Crown denomination were only issued in Australia in 1937 and 1938).

Crowned head of Queen Elizabeth II facing right (effigy known as the "Fourth portrait"). In tiny letters below head the artist's initials IRB (for Ian Rank-Broadley). The effigy is much smaller than on regular coins.

Below the effigy, a stylised depiction of an Australian one crown coin, showing the Imperial Crown. Around, COMMONWEALTH OF AUSTRALIA. The artist's initials K.G (for [George] Kruger Gray) are in small letters in the field at the bottom right of the crown. Denomination and date not depicted.

Around above, ELIZABETH II AUSTRALIA 2016. Below, FIFTY YEARS.

The reverse design includes a representation of the head and shoulders of a traditional Australian Aboriginal, a representation of the Southern Cross and a representation of Australian flora. In two lines, the denomination 2 DOLLARS.