This Mid Century free form art glass centerpiece bowl is in the Fostoria Heirloom line, produced from 1959 to 1970. The coloring is light blue and white opalescent. Their catalogs called this shape an oval centerpiece bowl, but due to its hand made nature the shape is more rectangular. It's about 12 by 9-1/2 inches, 7" at the highest point. In very good vintage condition with no damage. The pictures show how the bowl displays on both dark and light backgrounds.