There is another reason to despise the general, though - the market is flooded with fake 'Jacobite' drinking glasses to the extent that a curmudgeonly Scottish glass-dealer and collector I know describes the whole area of Jacobite glass as 'a mine field'.
It is reckoned that well over half of all engraved Jacobite glasses in private and public collections are fakes - by which it is meant that some clever engraver has got hold of an original, early to mid 18th century glass, then embellished it with Jacobite symbols and slogans, thereby tripling it's price. The net result of the attack on the market is that people are so scared of buying one of the numerous fakes that glasses without provenance have come right down in price, and a well-engraved one can be bought for a few hundred pounds. The one below is a well known genuine one.
The world expert on Jacobite glass has managed to identify about 7 individual engravers by their style, and one of them is reputed to be still alive and working today. He is not, however, 260 years old.
For this reason - and that I have never met a glass-dealer who is not prepared to knife his own mother in the back to undercut another bidder - I have somewhat baulked from seeking out engraved glasses of late. I just don't have the expertise, and added to that is the price of the real things (when they can be attributed as real). The curmudgeonly Scot recently acquired a glass which was so good that he could not afford to keep it. He also owns the original photo below, along with all the others. I think that his 'Wolfe' engraved glass sold for about £40,000. It was nice, though.