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.
1. (Agriculture) a type of farming in which most of the produce (subsistence crop) is consumed by the farmer and his family, leaving little or nothing to be marketed.. (Agriculture) a type of farming in which most of the produce (subsistence crop) is consumed by the farmer and his family, leaving little or nothing to be marketed.