This is a vintage Pyrex Ivy pattern Cinderella mixing bowl, likely the 1.5-pint size (#441) from the Promotional Chip 'n Dip set released in 1962. Features a green ivy vine design on white opal glass. Cinderella style with functional pouring spouts/handles on opposite sides. See photos for measurements. No chips or cracks. I believe this is part of the chip and dip set - this would be the dip bowl.