Watched today's repeat and saw once again a so called expert appraising an 18th century opaque twist wine glass having the most desired colour of all 18th c glasses, yellow ,and he couldn't have been more wrong if he tried , in fact the price achieved at auction was a mere fraction of its true value ,I am sure the vendor was more than delighted with the result after the miserable estimate that was provided but I am sure if they had been directed to a specialist auction and given the correct information about the glass they would have been even happier with the result , which would have been many thousands of pounds.