Vintage 70s PYREX #215 Clear Glass 9×5″ Bread Loaf Baking Dish ~Wide Handles USA
Borosilicate Glass is Much More Resistant to Thermal Shock. It’s for this reason that all high quality cookware is made from borosilicate glass. The bottom is marked : 215, 22x12x7cm PYREX Corning NY USA, for oven and microwave.
