CorningWare Blue Cornflower Pie Plate Value Guide

Vintage Blue Cornflower 9 inch Pie Plate CorningWare P-309 ...
CorningWare Blue Cornflower Pie Plate
Estimated Value
$25 – $28
Period
1960-1975
Origin
United States
Materials
Pyroceram, glass-ceramic
Category
Corningware

The CorningWare Blue Cornflower pie plate is a quintessential piece of mid-century Americana, featuring the signature three-flower floral motif introduced in 1958. Its collectibility stems from the use of Pyroceram, a revolutionary space-age glass-ceramic originally engineered for missile nose cones to withstand extreme thermal shock.

What Is CorningWare Blue Cornflower Pie Plate Worth?

The typical price range for CorningWare Blue Cornflower Pie Plate is $25 - $28 based on recent sales. However, values can vary depending on the item's condition, rarity, and other factors such as:

  • Condition of the blue cornflower decal, as fading or scratches from metal utensils can lower the $25-$28 value.
  • Absence of 'flea bites,' chips, or gray metal marks along the rim of the 9-inch plate.
  • The clarity and presence of the original backstamp, which confirms its production era between 1960 and 1975.
  • Overall surface gloss, as repeated dishwasher use can dull the original high-shine finish of the Pyroceram.

How to Identify CorningWare Blue Cornflower Pie Plate?

  • Check for the iconic three-petaled blue cornflower decal centered on the white glass-ceramic body.
  • Verify the material is Pyroceram, which has a distinct opaque, porcelain-like appearance rather than standard clear glass.
  • Look for the CorningWare backstamp on the bottom, typically indicating the 9-inch size and 'Made in U.S.A.'
  • Ensure the piece dates from the 1960-1975 era by examining the specific font and style of the manufacturer's mark.

History of CorningWare Blue Cornflower Pie Plate

Introduced in 1958 by Corning Glass Works, the Blue Cornflower pattern became the signature design of CorningWare. Made of Pyroceram, a space-age glass-ceramic material originally developed for guided missile nose cones, it was revolutionary for its ability to go directly from the freezer to the oven or stovetop without shattering.

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