Leslie Pina and Lorenzo Vigier say in Scandinavian Glass 1930-2000, Fire & Sea, p117, that "many Swedish companies used this pinstripe technique in the 1950s and 1960s." To paraphrase, Kosta (signed), Sea Gasbruk (sometimes signed), Glimma Glasbruk, Smalandshyttan, Skruf and Johansfors are some of the contenders, many of whom only used labels.