Pyrex Collector Forums

Thanks for the info and your opinion!

I'm cleaning out my grandmother's house. I have a factory sealed box Pyrex mixing bowl set. Verde green, #300-16, 1-1/2 pt; 1-1/2 qt; 2-1/2 qt. Box has a price printed on it of $2.95 (!) It has been sitting in her attic for years. I will assume it was a duplicate so she stored it away. My question i...