Coin
A Dictionary of Law · Henry Campbell Black · 1891
A Dictionary of Law
Pieces of gold, silver, or other metal, fashioned into a prescribed shape, weight, und degree of fineness, and stamped, by authority of government, with certain marks and devices, and put into circulation as money at a fixed value. Strictly speaking, coin differs from money, as the species differs from the genus. Money is any matter, whether metal, paper, beads, shells, eto, which has currency as a medium in commerce. Coin is a particular species, always mado of metal, and struck according to a certain process called “coinage.”
Wharton.