Pyrex was made in the 50s and makes for the perfect kitchen accessory for any vintage lover. The stuff was built to last and the designs are wonderfully retro. As a result, it has now become quite collectable. It makes the perfect item to thrift, so keep your eyes open for it. If you thrift some Pyrex, check out the Pyrex love website to figure out what you've got. I believe my casserole is part of the Butterfly gold collection, who knew?