Corning Ware 1958-59 Cornflower Blue Baking Dish C-3 with Original Pyroceram

After researching the stamp on bottom of dish and communicating with an online appraiser, this dish looks to be from the 1958-1959 era of Corning Ware with original Pyroceram technology. Style/Model C-3 Cornflower blue pattern Two handles See photos for measurements