Q: I inherited an eight-piece set of Dugan glass that includes a water pitcher, six tumblers, and a tray. It’s blue with gilt decoration and in excellent condition except for the tray, which has a slight chip. Any advice for a potential sale and valuation?

A: Thomas Dugan, Harry Northwood’s cousin, founded the Dugan Glass Company about 1904. It operated in Northwood’s old factory in Indiana, Pennsylvania. Carnival glass was made beginning in 1909. Thomas Dugan left in 1913 and the name of the company was changed to the Diamond Glass Company. The company closed in 1931. The pattern of your water set is Jeweled Heart Blue. It was also made in green and white opalescent. You might be able to sell them to a resale or consignment shop. Selling price, about $75.