AN ENGRAVED AIRTWIST WINE-GLASS, the bell bowl engraved and polished with a branch of fruiting-vine, the double-knopped stem filled with spiral threads above a conical foot, 17cm. high; and an airtwist pan-topped wine-glass, the bowl engraved with a border of flowers and foliage, the stem filled with spiral threads above a conical foot, 15cm. high, circa 1750 (2)