Metal coin set of all 72 Goetia demons as outlined in the 15th century grimoire The Lesser Key of Solomon. All coins are single-sided (blank back) and about 22mm in diameter and almost 2mm thick, they are slightly smaller in diameter than a US quarter. They are slightly smaller in diameter and slightly thicker than a US quarter. All coins are cast in a durable zinc alloy with a blackened background to provide an antiqued finish.