There could be a small fortune disguised as gaudy cookware hiding in the back of your cupboard.
Vintage Pyrex glassware is currently listed at online auction sites for much more than you might expect -- some of the notoriously bright, floral-printed dishes are going for nearly $1,900.
The most valuable finds were manufactured between 1915 and 1970. After 1970, the company changed its formula, and the subsequent production runs were less durable than old-school Pyrex.
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