Rare 19th Century Amethyst Wine Glass c.1820

Exceptionally rare early 19th Century wine glass which has an amethyst honeycomb bowl above a clear hollow stem (open from the base) with an amethyst milled collar at the top, amethyst raspberry prunts and a clear conical foot with hand applied trailing. It has a number of old collectors’ stickers on the foot indicative of its rarity. Only the 2nd example we have seen in this form in the last 22 years Date & Origin:- England, c.1820