That casserole dish could be worth a lot of cash. Take a look in your pantry for these rare cookware items that are unbelievably valuable right now.

It's hard to say what becomes valuable over time and what turns out to be worthless. Is it because some things simply aren't made to last today? We've seen ceramic Christmas trees go for ridiculous prices on eBay and the current hot item is CorningWare.

Named, in part, for its signature blue cornflower decorations, CorningWare was state of the art in 1958 and remains popular and versatile today.

CorningWare is an American staple from the kitchen to the dining room table. With an amazing ability to go from oven to table to refrigerator, these versatile ceramic pieces work hard to make your life simpler and your table more beautiful. CorningWare is indispensable for baking and serving.

What the collectors on eBay want are the rare patterns. that'slife.com reports, "more rare patterns, like Wildflower - made from 1977 to 1984 - and Floral Bouquet - made from 1971 to 1975 - can fetch up to $10,000 online." So, take a close look at the current listings and see if you have any of these in your kitchen that may have been handed down. The heirloom may be an inheritance.

The prices are still going up.

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