Collecting drinking glasses from the 'Bickerton period' can be expensive, and doubly so if something turns out not to be 'right' - collectors tend to be impulsive (like me) and mistakes can be made which doesn't matter if it's twenty quid, but does if it's three hundred squids - caution is needed if buying from an unknown source - on-line auction sites can be tempting and drinking glasses have been the most active area of collecting, which sellers know. The word Georgian is a very loaded word. On the plus side these are an investment and wonderful to own and hold - though I could never bring myself to use them. Best of luck to anyone who collects such pieces, but remember to be cautious.

These comments don't, of course, refer to the glass in question.