V-IV c. B.C.
Slightly convex disk. Face side is polished, multiple concentrical lines from spinning on reverse side. Half of the mirror, several cracks. Original polish on face side is still preserved and reflecting images.D. 4.3″ (10.9 cm).
See: Comstock M. Greek, Etruscan & Roman Bronzes in the Museum of Fine Arts. Boston,
1971, cat. 649.