TWO AIRTWIST WINE-GLASSES of drawn-trumpet shape, the stems filled with spiral threads above conical feet (one with minute rim chips), circa 1750, 19cm. and 17cm. high; an opaque-twist wine-glass of drawn-trumpet shape, the double-series stem above a conical foot, circa 1770, 17cm. high; a plain-stemmed wine-glass of drawn shape with a bell bowl, the stem with a tear, on a conical foot, circa 1750, 16cm. high; and a wine-glass, the bell bowl with a tear to the base, supported on a plain stem enclosing an elongated tear above a folded conical foot, circa 1740, 16cm. high (5)