The “drop hammer" coin mint was designed and built by Michael Stewart in 1971, based on descriptions from Leonardo da Vinci’s mechanical genius. It was known as the first industrialized tool of Renaissance times, perfecting the art of coin making with increased accuracy over the previous hand-hammered technique. The mint is operated using controlled amounts of accelerated gravity by raising a 150 lb. hammer to a height of 9 feet. The coins set between the two dies are struck with an incredible 40 tons of force! The symbolic art we offer reveals only positive energies that may move and inspire you. An understanding of the profound messages conveyed by symbols may creatively enhance your journey of self-discovery.