Mirror with eight arches, decorated with peonies and leaves, 12th-13th century, Unknown Korean, 8 1/2 in. (21.59 cm), Bronze, glass, Korea, 12th-13th century, Finely cast bronze mirrors were a standard luxury good among aristocratic men and women. While the fronts were polished to achieve a reflective surface, the backs were cast in decorative relief and organized around a central domed eyelet to accommodate a cord. As magical solar disks, they were also frequently placed in tombs in the belief that they could illuminate the darkness for the spirit of the deceased.