A beautiful example of an English drinking glass of the double series opaque twist (DSOT) type. The round funnel bowl sits atop a stem with a 14-ply spiral band around a central pair of heavy spiral threads. Conical foot with rough, snapped pontil.
By far, most opaque twists are straight stems. In contrast, this one has a medial knop. However, what makes this glass highly unusual is that the knop, which is quite large, is a bladed knop. Practically all knops on opaque twist glasses are of the plain form.
Condition of the glass is excellent, with no chips, cracks, scratches, or haze. The height is 6 1/2", the bowl diameter is 2 3/8", and the foot diameter is 2 5/8".