Corning Ware Cornflower Blue Casserole Value Guide

The Cornflower Blue pattern, launched in 1958, is the iconic debut design for Corning Ware's revolutionary Pyroceram line. These square casseroles are highly collectible because they utilize a space-age glass-ceramic material originally engineered for missile nose cones, allowing for extreme thermal shock resistance.

What affects the value of Corning Ware Cornflower Blue Casserole?

• Condition of the blue floral transfer, as fading or scratches from abrasive cleaning can lower the $20-$22 market value.
• Presence of the original clear glass lid, which significantly impacts the completeness and desirability for collectors.
• Overall surface gloss, as 'dishwasher haze' or permanent dulling of the Pyroceram finish reduces the item's aesthetic appeal.
• Specific production marks on the bottom that denote earlier 1960s runs versus later mass-produced iterations.

How to Identify Corning Ware Cornflower Blue Casserole?

• Look for the signature three-flower blue floral sprig centered on the side of the white square dish.
• Check the base for the Corning Ware stamp, which often includes the model number and 'Made in U.S.A.'
• Verify the material is Pyroceram, which has a distinct opaque, glass-like weight and smooth texture compared to standard stoneware.
• Examine the handles for the integrated small 'tab' style characteristic of 1960-1970 era production.

History of Corning Ware Cornflower Blue Casserole

Launched in 1958, the Blue Cornflower pattern was the first design for Corning Ware. It was made from Pyroceram, a space-age glass-ceramic material originally developed for missile nose cones. The material was revolutionary because it could withstand extreme temperature changes without breaking, allowing users to move a dish directly from the freezer to the oven.