The Promotional Corningware Pattern Never Sold In Stores That Collectors Dream Of Having

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Since CorningWare was first introduced in 1958, there have been dozens of patterns and colors released over the years. There have also been some rare patterns that you should snag if you're lucky enough to find them on the secondhand market. One of the rare patterns that collectors might dream of finding is the promotional Shell Oil Macrame, which was made available between 1971 and 1973 in two colors. This design was only available to people who had a Shell Oil Gas credit card, with a small form you would mail in that was found on the return envelope flap.

The Shell Oil promotional pattern features either a cornflower blue or an avocado green scroll design over the classic white background of the CorningWare Pyroceram. This is a geometric design, reminiscent of the weaving patterns found in classic macrame, which is how it got its name, although some people do refer to these as medallion; however, that name is associated with an entirely different release that was found on a percolator from 1968. 

While this design was never available in stores, it was still released on a variety of cookware. It's also not that difficult to find on the secondhand market, making it a solid addition to your collection if you want to boost your kitchen's aesthetic appeal. On eBay, you can find a 3-quart casserole dish with clear lid listed for $24.99 or a 12 inch long roasting/lasagna pan for $59. Of course, smaller casserole dishes without a lid can be as low as $6.99, making this an affordable option for fans of vintage CorningWare.

When it comes to vintage dishware, there are a few brands that you should always look out for at the thrift store, including CorningWare. If you're able to find the Shell Oil Macrame pattern, there are a few things to pay attention to, including the condition and whether it comes with a lid or not. A lid not only adds to the value of the dishware, but it's also important for storage and cooking. You also want to make sure that there are no chips, crazing, or cracks in the ceramic or glass, as this can compromise the piece's safety when using it for cooking. Marks and silverware scratches on the interior of the dishes typically do not impact the usability of CorningWare.

Another thing to look for when picking up this CorningWare pattern is the backstamp. Since this pattern was released in the early '70s, the brand name will actually be written as Corning Ware, which was how it was stylized until 1998. You'll also want to check for either the letter P or A in front of the model number of the cookware. 

The P-series will be found on dishes made until 1971 (although there are some dishes that were made with the P until 1999). The A-series is for post-1971 dishware, which also means that the handles will be wider and the sides of the dishes straighter. Other things to check for on the bottom of each piece are the markings telling you the size of the dish, that it can be used "for range and microwave," and where it was made (either Made in USA or simply USA).