up in July." The first series of coins showed Queen Salote Tupou III, two years after her death. The reverse designs were Tu'i Malila (a radiated tortoise presented to the Tongan royal family by Captain Cook in 1777) on the 1 and 2 seniti, wheat sheaves and a stylized depiction of the constellation Crux on the 5 and 10 seniti, and the Royal Tongan coat of arms on the higher denominations. From 1968, the portrait of King Taufa'ahau Tupou IV appeared, facing right, with the first year issue commemorating the coronation event. Since 1975, all coins have borne the word "Tonga" on the obverse and the inscription "Fakalahi meakai" (Tongan: "Grow more food") and the denomination on the reverse. All 1975–2011 coins are FAO themed. The King is shown in military uniform in portrait format rather than profile. As part of a coinage reform, new coins were minted in 2015 by the Royal Australian Mint. Specifications and designs are: The King is shown facing on the 10, 20, and 50 seniti, under the initials FAO. Banknotes In 1967, notes (bearing the portrait of Queen Salote Tupou III) were introduced by the government in denominations of , 1, 2, 5 and 10 paanga. From 1974, the portrait of King Taufa'ahau Tupou IV appeared on the notes. paanga notes were issued until 1983, with 20 paanga notes introduced in 1985, followed by 50 paanga in 1988. In 1992, the National Reserve Bank of Tonga took over production of paper money. On 30 July 2008, a new banknote series with greater security features was introduced featuring George Tupou V and a redesigned look. During this issue, a 100 paanga banknote was introduced for the first time. The obverse of Tongan notes features text in the Tongan language and shows the portrait of the monarch. The reverse is in English language and shows typical motives and landmarks of Tonga: the Haamonga a Maui Trilithon, a humpback whale, burial mounds, school students and rugby players, the royal palace, the Tongan Development Bank, the Port of Vavau (twice, once depicted as it was around 1900, and the other in contemporary depiction), and ngatu making. On June 29, 2015, the National Reserve Bank of Tonga introduced a new family of paanga banknotes in six denominations, from 2 to 100 paanga. Banknotes of 50 and 100 paanga are made of a paper/polymer hybrid substrate. They feature a portrait