Stem glass with cobalt blue bowl & decorative cut decoration, Spiegelau around 1930

Stem glasses made of colorless glass, disc base, base with radiant cut decoration, faceted and beaten stem shaft, ovoid, cobalt blue overlaid cup with decorative cut decoration, polished / heated lip edge. Wine glass is in healing condition. Spiegelau crystal glass factory around 1930, form 17/66. Height: approx. 21.2 cm. Lit: Sample sheet from the glassworks