During the reign of King Fahd ibn Abdul-Aziz, between 1982 and 2005, Saudi Arabia began minting the country's first modern coins. The coins were based on a decimal system, with 1 riyal divided into 100 halals. The coins were minted from copper, nickel and silver. The front of the coins featured the portrait of King Fahd, and the reverse featured the coat of arms of Saudi Arabia. The coins were minted by the Royal Saudi Arabian Mint. 1982 coins: 1 halala (copper), 5 halala (copper-nickel), 10 halala (copper-nickel), 25 halala (nickel), 50 halala (nickel), 1 riyal (silver).1990 coins: 1 halala (aluminium), 5 halala (copper-nickel), 10 halala (copper-nickel), 25 halala (nickel), 50 halala (nickel), 1 riyal (nickel).2000 2005 coins: 1 halala (aluminium), 5 halala (copper-nickel), 10 halala (copper-nickel), 25 halala (nickel), 50 halala (nickel), 1 riyal (nickel). 2005 coins: 1 halala (aluminum), 5 halala (copper-nickel), 10 halala (copper-nickel), 25 halala (nickel), 50 halala (nickel), 1 riyal (nickel). A number of commemorative coins were minted during the reign of King Fahd. These coins commemorate various events and anniversaries, such as the 1986 FIFA World Cup and the 1990 Gulf War.