Although the bowl is not marked, it is believed to have been produced by Hazel Atlas in the late 1940's to the early 1950's. The Moderntone Rings bowl was part of a set of mixer bowls for Hamilton Beach and Sunbeam mixers. The bowl measures 6 1/2" in diameter and 3 7/8" deep. The bowl is in excellent condition with no chips, cracks, or flea bites, and showing only the lightest indications of use. Shipping will be discounted on multiple orders.