From their post:
Realm Coins, a kickstarter project that lets you buy real metal coins to upgrade your games, has hit it's goal in less than 48 hours.
The coins come in gold, silver, and copper (actually being made of brass, nickel, and copper) and have a heraldry theme. The gold coin has a crown and wyvern; while the silver coin has a knight's helm and gryphon; and the copper coin has a peasant's hat and boar. The designs would work for upgrading your medieval eurogamers or fantasy roleplaying sessions.