Polyhedral sundial with hexagonal and square faces, similar to items inv. 2456 and inv. 2458. Each face is painted with a different type of sundial (horizontal - vertical - inclined) complete with gnomon. The top holds a magnetic compass—complete with a glass cover but missing the magnetic needle—to orient the instrument toward the local magnetic meridian. Made by Stefano Buonsignori. Provenance: Medici collections.