Cup with pierced air bubble & cobalt blue overlay, Josephinenhütte

Cup made of colorless crystal glass, disc base, base with sling star decoration, conical shaft notched on the sides with pierced air bubble, tulip-shaped cup with cobalt blue overlay, wall with wedge cut and sling star decoration. Josephinenhütte, form Siegfried Haertel, around 1915-25. Height: approx. 26.5 cm. Lit: Stefania Zelasko, Josephinenhütte 1900-50.