Last Updated: Jul 19, 2016 Views: 21
Glasbake was a Pyrex competitor manufactured by McKee Glass Company (you can find out a little more about the company here). I have looked through all of our sales catalogs for that company, but have not been able to find the kind of dish you described. However, I did find a piece of glass that sounds like what you mention on page 91 of Florence's Ovenware from the 1920s to the Present: Identification and Value Guide (by Gene and Cathy Florence, 2006). It doesn't include any date or product information. The price is what these authors have assigned it, not the original price.