Ever since Pharaoh walked Ancient Egypt, gold coins have been in high demand in human civilization. Of course back then, gold was considered a luxury, or even a gift, rather than for investment strategies. In Ancient Egypt, the best investment plan you could hope for was to be buried alive with your husband!
Nevertheless, gifts of gold continued to be circulated, all the way until the days of King Croesus, who issued the first official gold coin release. These were the first coins standardized for purity and content and made not for collecting, but for general distribution throughout the land. Eventually gold became currency because of its exceptional qualities and wide production.