Currency (Coins)

Trade between cultures was done by barter, but required a double coincidence of wants. Gold became the default currency, and was meticulously weighed until coins of standard weight were introduced.
 Ardys Lydia 640 BCE Currency (Coins)

Trade between cultures was done by barter, but required a double coincidence of wants. Gold became the default currency, and was meticulously weighed until coins of standard weight were introduced.