See photos for condition and contents. These four 10 ounce glasses have no markings or decals, but they are identical to those made by Heisey. I do not know the age. There is no noticeable wear.Each weighs about 11.5 ounces (weight varies). They are 7 3/8 inches tall. The base is 3 1/4 inches across. The inside depth is also 3 1/4 inches. I have lots for sale including another lot of these glasses and other glasses of this same pattern. The item "LOT OF 4 VINTAGE HEISEY SPANISH COBALT BLUE OPTIC 7.4 WINE GLASSES, BALL STEM" is in sale since Monday, January 20, 2020. This item is in the category "Pottery & Glass\Glass\Glassware\Elegant\Heisey". The seller is "tevawaugh" and is located in Brighton, Colorado. This item can be shipped to United States.