How do you know if your Pyrex is worth money? Look for especially old pieces in great condition ... Keep in mind, sellers can ask anything they want for vintage Pyrex, but that doesn't mean ...

Everything old is in vogue ... the '50s and '60s. Think: anything that would look at home in a set from "Mad Men" or "The Marvelous Mrs. Maisel." Midcentury modern Pyrex designs like the atomic ...