Corning Ware Cornflower Blue Square Casserole Dish 2-3/4 cup P-43-B

Corning Ware Cornflower Blue Square Casserole Dish 2-3/4 cup P-43-B.
Vintage from the 1970s
P-43-B
2 3/4 cup
5"x5"
2.5" tall
Excellent condition.