From Webster’s dictionary, circa 1880:
Money
MONEY, n. plu. moneys.
1. Coin; stamped metal; any piece of metal, usually gold, silver or copper, stamped by public authority, and used as the medium of commerce. We sometimes give the name of money to other coined metals,and to any other material which rude nations use a medium of trade. But among modern commercial nations, gold, silver and copper are the only metals used for this purpose. Gold and silver, containing great value in small compass, and being therefore of easy conveyance, and being also durable and little liable to diminution by use, are the most convenient metals for coin or money, which is the representative of commodities of all kinds, of lands, and of every thing that is capable of being transferred in commerce.