Cleverly designed with an iron bit attached to a bronze handle, this key can be admired from all angles. While the handle terminates in the head of a ferocious boar, farther down are back-to-back heads of Mercury—his wings formed from the ears of the boar—and his goat-legged, horned son, Silvanus (also known as Pan). Given the rustic nature of the heads, scholars have suggested that the key might once have unlocked a country villa.