Vintage Corning Ware Blue Cornflower Casserole NO LID The Cornflower Blue pattern has become the iconic, simple yet elegant, floral design associated with Corning Ware cookware. This dish is vintage model "P" marked (P 1 3/4 B ) and holds 1 3/4 Quarts. Made from Corning's Pyroceram (not the later, less durable ceramic model). App. measurements 7" x 7" x 3" ( not counting the handles) The P Series 1 3/4 qt size casserole was introduced 1962 and discontinued 1972 . Condition - excellent condition, is very shiny inside and out, no utensil marks, no chips. Very minor rubbing on the bottom.