Commodity money is money whose value comes from a commodity of which it is made. Commodity money consists of objects having value or use in themselves as well as their value in buying goods.
This is in contrast to representative money, which has no intrinsic value but represents something of value such as gold or silver, in which it can be exchanged, and fiat money, which derives its value from having been established as money by government regulation.
Japanese commodity money before the 8th century AD: arrowheads, rice grains and gold powder. This is the earliest form of Japanese currency.
A bronze okpoho or manilla, the traditional commodity money in West Africa until the 1940s.
Axe-like grzywnas (commodity money) from Kostkowice, Poland, 9th to mid-10th century AD
A gold standard is a monetary system in which the standard economic unit of account is based on a fixed quantity of gold. The gold standard was the basis for the international monetary system from the 1870s to the early 1920s, and from the late 1920s to 1932 as well as from 1944 until 1971 when the United States unilaterally terminated convertibility of the US dollar to gold, effectively ending the Bretton Woods system. Many states nonetheless hold substantial gold reserves.
Gold certificates were used as paper currency in the United States from 1882 to 1933. These certificates were freely convertible into gold coins.
The British gold sovereign or £1 coin was the preeminent circulating gold coin during the classical gold standard period.
Huge quantities of $20 double eagles were minted as a result of the California gold rush.
William McKinley ran for president on the basis of the gold standard.