Regardless of its questional beginnings, the Wheat pattern was revisited later and released (about 1962) under the W-series designation that ran up until about 1970 or 71. After 1971, Corning Ware pieces were modified, became the A-series (there are no A-series Wheat pieces) and the Wheat pattern was dropped.
To date, I have found that nearly every piece of P-series Cornflower (minus a few of the later percolators) was also available in the Wheat pattern (as a W-series piece). This is a very different scenario when compared to the other early patterns like Trefoil; which only had 3 percolators, 3 saucepans and a couple of skillets.
I think the time has come to propose a new scenario here... You see, the whole thing doesn't make any sense... At least, not any more.
HOW can someone simply load the wrong pattern into the machine? It's a silk screened enamel. You would not only have to load the wrong pattern into the silk screening machine but the wrong enamel color as well... and let's face it... Blue and Brown look NOTHING alike, even to someone who is color blind.
Even if that really did happen back in 1958... WHY would Corning wait for another 4 years (1962) to revisit the Wheat pattern? That makes absolutely NO sense either; especially since the Trefoil pattern was released in 1960. The whole thing seems completely nonsensical to me.
What really got me thinking about how weird the whole "accepted story" sounded was when I got my hands on this piece.
Then I got my grubby mitts on this one as well..... (the P-83-C lid is just a tiny bit too small)
Which seems to be a "prototype" for the P-83-B Menuette skillet that would eventually be released in 1966.. (P-83-B on right)
The first two patterns released on Corning Ware products were Cornflower (blue) and Trefoil (black). Both colors of enamel are very similar. In fact, if you have a piece of Trefoil that is slightly faded from over cleaning, the design takes on a bluish tinge.
All this has led me to believe that the reason that Wheat was originally passed over, was not so much that the "design" wasn't ready... Obviously is was or it would not have even been printed in Blue. It had to do with the color. The golden brown enamel wasn't ready to go to production. Blue wheat was not part of the vision for the product. So they went to production with the color they had... and it was blue... which meant Cornflower. Black is not too far of a stretch from blue, so they were able to get the Trefoil pattern out 2 years later... Even the Holiday pieces from 1960-1963 were printed in blue or black. Eventually, they found a brown enamel color that they liked for the Wheat and, since it WAS suppose to be the original design, they went ahead and released it.
Incidentally, they DID release a blue Wheat Corning Ware in Britain. I actually bid on a piece that was on eBay UK a couple years ago (I lost). I don't remember if it was labeled as Pyrosil Ware or Pyroflam though. It was 2 years ago, after all.
Where is your CorningWare??