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.
The ways in which food and other material items are collected is called a system of production. Specifically, the manner in which a group produces its food is referred to as a subsistence strategy. In a capitalist system, money is the key to production. Resource use is extensive and temporary. 2  In other words, foragers may use a wide-variety of resources over a large territory; however, they leave enough resources so that the area can regenerate. 3  Once the resources reach a certain level, the group moves on. 4  Permanent settlements are rare.