AN AIRTWIST WINE-GLASS, the round funnel bowl with hammered flutes to the lower part, supported on a double-knopped stem filled with spiral threads above a conical foot, 17.5cm. high; an airtwist goblet of drawn-trumpet shape, the stem filled with spiral threads, on a folded conical foot, 20cm. high; and a mercury-twist wine-glass of drawn-trumpet shape, on a conical foot (minute chip to rim of bowl and foot trimmed), 16cm. high, circa 1750 (3)