"Picnic" Glass, Set of 6, Orrefors Picnic amber champagne coupes from the 1970s are vintage Swedish glassware, part of Orrefors' elegant colored glass series, known for their Mid-Century Modern design with a straight bowl and stem, often unglazed or sticker-labeled rather than signed, making them identifiable by their specific style and amber hue rather than markings, though some might have faint Orrefors marks or original labels.