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.
During the Archaic (a term meaning ancient period), people lived in small communities of closely related family members, known as bands, and obtained food by collecting naturally occurring edible plants and hunting wild animals, a way of life that archaeologists call a hunting-and-gathering economy.