Lot Essay
This hemispherical bowl on a high ring base was assembled primarily from slices of bars formed of opaque yellow with white spirals, centered by opaque white. The rim is finished with a reticella coil of dark red twisted with opaque white, while the foot is of darker amber with swirls of opaque white. Mosaic bowls of similar shape were found in the shipwreck off the island of Antikythera, providing a secure date for the type, circa 70-60 B.C. For another similar example and full discussion of the type see no. 86 in E.M. Stern and B. Schlick-Nolte, Early Glass of the Ancient World, 1600 B.C.-A.D. 50.