Lenox Crystal Impromptu Yellow Stemware Cocktail Glasses. Lenox Impromptu Pattern produced from 1976-1983. Textured Crinkle textured design. One 6 x 3/4 x 2 3/4 water goblet. Heavy & substantial. Small chip on base (please see photo) 1 Impromptu Yellow Stemware Wine glass 5.5 x 2.75 2 Sherbet Glasses, 4.5 x 3.5 Lovely retro drink ware. Looks great on the shelf or in-hand. Vintage 70s Lenox Barware. Vintage 70s Lenox Barware 4 Lenox Crystal Impromptu Yellow Stemware Cocktail Glasses