Limited edition pieces create buyer demand because only a handful of people get the chance to own them. Look for Fenton glass that's marked out of a lower number, and it's probably going to be worth quite a bit. For example, only 35 of these black cameo vases were made, and one just sold on eBay for $1,249.

Fenton Art Glass Company made glass for 104 years before it stopped production. Fenton announced its closure in 2007, but remained open with a smaller team until July 2011 to complete incoming orders and sell inventory, said Measell.

Fenton ceased "traditional" glassmaking at the Williamstown, West Virginia, factory in July 2011. However, the factory remained open as a jewelry making operation, producing handcrafted glass beads and Teardrop earrings.

Many Fenton items are being sold on eBay and Facebook. See the article below. If you have a larger collection, then you could consider an auction. One of the most experienced Fenton auctioneers is Randy Clark Auctions in Dexter City, Ohio.