This is a 9" mixing bowl in the Moderntone Platonite pattern by Hazel Atlas. Hazel Atlas made Moderntone in Platonite (white milk glass) from the 1930s-50s. This bowl is 9" wide and 4 1/2" tall. It has some inner rim roughness along one side, probably got beat up a little by an overenthusiastic mixer. Price reflects condition.