and King George III on the other. In 1812, Governor Lachlan Macquarie of New South Wales bought Spanish dollar coins, following the arrival of the ship Samarang at Port Jackson with 40,000 Spanish dollars, paying four shillings and nine pence for each dollar. He was worried that the coins would quickly be exported out of the colony and had holes cut in the middle of them to try to keep them in Australia. These were known as Holey dollars (valued at five shillings), with the piece from the middle being called the Dump (valued at around 15 pence). Both were declared legal currency on 30 September 1813 and went into circulation in 1814. British currency became the official currency of the Australian colonies after 1825, with almost £100,000-worth of British coins being imported during 1824–25. The Holey dollar was no longer legal tender after 1829. The most notable Holey Dollar was the "Hannibal Head" a one of a kind coin that features the portrait of King Joseph I of Spain. The Hannibal Head sold at auction in 2018 to a private collector for $500,000. Gold coins and Sovereigns Unofficial gold coins were used during the gold rush of the 1850s. Traders' tokens were also used because of the shortage of coins caused by the large increase in population. Requests to make gold coins in Adelaide in 1852 to compensate for the shortage of coins were rejected by Britain after 25,000 One Pound pieces were struck. Australia's first official mint was in Sydney, founded in 1855. It produced gold coins with an original design between 1855 and 1870, with "Sydney Mint, Australia, One Sovereign" on one side and Queen Victoria on the other, or "Sydney Mint, Australia, Half Sovereign", before starting in 1870 to mint gold coins of British design. One gold sovereign equalled £1. The pound Federation in 1901 gave the Commonwealth a constitutional power to issue coins and removed this power from the States. British coins continued in use until 1910, when Australian silver coins were introduced. These included florins, shillings, sixpences and threepences. They had a portrait of King Edward VII on one side. Australian pennies and half-pennies were introduced into circulation the following year. In 1931 gold sovereigns stopped being minted in Australia. A crown or five-shilling coin was minted in 1937 and 1938. The dollar The Australian dollar replaced the Australian pound on 14 February 1966