Markings: Bases include variations of: "209 23 cm PYREX FOR OVEN AND MICROWAVE NO STOVETOP OR BROILER CORNING, N.Y., USA"; circular "210 TRADE MARK OF PYREX MADE IN U.S.A. OVENWARE"; and "210 25 cm PYREX FOR OVEN AND MICROWAVE NO STOVETOP OR BROILER CORNING, N.Y., USA.".
