They're often valuable for vastly different reasons â like the World War II-era coins minted from atypical metals, or double-printed pennies â but each one is easy to miss if you're not paying attention. See also: Californian Couple Finds $10 Million Worth of Gold Coins in Tin Can.
A subsistence economy is a non-monetary economy which relies on natural resources to provide for basic needs, through hunting, gathering, and subsistence agriculture.
Peasant farming describes small-scale farming for subsistence as well as for cash sale in the market. Initially, small famers in the British Caribbean produced crops for domestic use as well as for sale in the market. However, after 1860, these farmers began to export their crop.