Vintage Pyrex Blue Rectangular casserole baking Dish.

This particular style of Pyrex refrigerator dish was introduced in the 1940s and is popular among collectors. The dish is part of the Primary Colored Oven Refrigerator Sets, known for their stackable nature and clear lids. No lid included. Add to a set you have or start a new one. Robin egg blue. But some fading which is normal for this vintage piece. 57