Champagne and aperitif glasses, 12 pieces Schott Zwiesel is a German glassware manufacturer, and the glasses shown in the picture are recognized as part of their vintage "Naab" line. Design: These elegant champagne flutes, also known as "Sektflöten", were designed by Heinrich Löffelhardt in 1965. Material: They are made of crystal glass. Features: They are characterized by a distinctive, carved base and, in this particular case, a gold Greek pattern (meander) on the rim. Status: The glasses are a popular vintage item, often sold in sets of 4 or more. They are made of patented Tritan crystal, which is known for its durability, shine and resistance to scratches. All products are completely free of lead and barium. They are produced in Germany and Eastern Europe. Champagne glasses: Height: 15 cm Top diameter: 5.5 cm Bottom diameter: 5 cm Volume: 1.7 dcl Aperitif glasses: Height: 7 cm Top diameter: 7.5 cm Bottom diameter: 4 cm Volume: 0.5 dcl