Set of 6 vintage cobalt blue water glasses - glassware from Boussu

Set of 6 cobalt blue water glasses in Scandinavian style, "Serge" series, large model, created by Zéphire Busine for the glassworks of Boussu in the early 1960s. They are in very good condition, with no noticeable damage. However, there are bubbles and small differences between the glasses, which is quite normal for mouth-blown glass. Dimensions: Diameter: 8cm, height: 14cm.