One of the oldest forms of money was the gold coin, as far back as 560BC when the Lydian King Croesus. The Chinese then used them in the 5th or 6th Century BC. Gold coins were the main form of currency through to the early 20th Century. By 1933 most of the world had stopped making gold coins and using them as currency.
Today gold coins are primarily collected by investors to hedge against inflation. In 1967 South Africa introduced the Kruger rand to cater for small investors; hence the reason that they manufactured Krugerrands in 1oz, 1/2oz, 1/4oz, 1/10 and 1/20 oz
The main gold coins in circulation today in order of their popularity are the Krugerrand, American Gold Eagle, Canadian Gold Maple Leaf, British Britannia or Sovereign, Chinese Panda, Gold Dinar, Russian Chervonets and the Swiss Vreneli.