The Pyrex obsession—or should we say passion—is real. Plenty of us are still holding onto our mom’s or grandma’s colorful nesting bowl sets and pretty patterned casserole dishes, and there’s even a blog and a Facebook group for the more dedicated collectors. The company has been around for more than 100 years, after all. But did you know your durable glassware might actually be worth something (well, beyond cherished childhood memories)?
