Large cup with air filigree and ruby red overlay, Val St. Lambert around 1920

Monster cup / cup made of colorless crystal glass, slightly sloping disc base, conical stem shaft with spiral-shaped air bubbles and 9 pierced air beads in the upper cup base, conical ruby red overlaid and cut-decorated cup. Kuppa with a small chip on the upper edge of the mouth. Cristallerie du Val Saint Lambert in Belgium ca. 1920-30. Height: approx. 28.2 cm. Lit. see sales catalogs VSL 1905-1950.