Receta Guacamole on the Half Shell? - My P-Series Shell Oil Avocado Medallion Collection

In late 1970 or early 1971 (it is not known for sure which date is correct) the Shell Oil Company's Credit Card Division began offering a special pattern of Corning Ware to it's card carrying customers. The "Shell Oil Medallion" pattern, as it has become known, was available in either Avocado Green or Cornflower Blue until 1974. Thus, the pieces available span the P-series as well as the A-series cut over in 1972. This brings on a few problems when trying to determine exactly WHAT pieces were made.

Personally, I have a deep seated love for the P-series era of Corningware anyway, so I only collect pre-1972 pieces. It helps that the Petite pans, Pie Plate, Roaster and Loaf pan retained their P-series designation, even during the…