AN AIRTWIST GOBLET with a bucket bowl, the double-knopped stem filled with spiral threads above a conical foot (minute chip to footrim), circa 1750, 20.5cm. high; an opaque-twist goblet with an ogee bowl, on a double-series stem and conical foot, 19cm. high; and another with an ogee bowl, the stem with a corkscrew core entwined by two gauze spirals, on a conical foot, 18.5cm. high, circa 1770 (3)