The earliest coins were struck in the late seventh century BCE in western Asia Minor (present-day Turkey), which was home to many Greek cities. They are nugget-like in shape and made of electrum, an alloy of gold and silver.
See the on-line exhibition White Gold: Revealing the World's Earliest Coins: http://www.imj.org.il/exhibitions/2012/whitegold/index.html
Direction & Design: Sagi Rechter, Studio Hyuli
Animation: Roy Manor
Sound Design: Shai Zingerman
Storyboard: Yaniv Schauer, Haim Gitler, Chanan de Lange, Studio de Lange