
- hi - I should have been a tad more explicit in my comments. To have ten drinking glasses from, what you are assuming is the C18 i.e. Georgian, and with five from each pattern and all of them mint - is indeed unusual ............. it's also unexpected to have the five matching examples for each design. That's not to say it's impossible, but ordinarily not something that we see on the GMB.
The Georgians started in 1714 and lasted right through uninterrupted until 1830 - some might say too long

The heavy balusters I mentioned occurred during the early part of their dynasty, and there were other groups such as 'balusters' and 'balustroids' that occurred simultaneously or a tad later. These other glasses have many features similar to the earlier group such as folded feet and bowls of a similar design, but are less chunky - and there is a final group of a much lighter construction known as Newcastle light balusters - though whether they were ever made in Newcastle is doubtful. Their names are presumably a reference to the type of stem formation where the baluster is either of inverted design or a conventional shape i.e. with the lump toward the lower end of the stem.
However, all that aside, regret to say my uneducated opinion is that your glasses are not the age you are suggesting - though since I'm no expert at these things I hesitate to suggest their birthdate - features that should be present on C18 glasses are absent. Your group with a total height of 19.5 cms. is literally on the maximum of size for some of the baluster group, but the other taller pieces are too high, in my opinion, for inclusion in the entire group, though it's possible that at this height they were made specifically as glasses for toasting.
The absence of replies for such pieces is not unexpected - had your pieces been bona fide then I'm sure we would have had some definite response, and I suspect that the silence is due to the lack of genuineness. My thoughts are that these may well have originated on the Continent, somewhere, and later than you suggest - are you aware of any family members who might have travelled outside the U.K.?
This is about the sum total of my knowledge on these things, and regret unable to assist further - as a suggestion you might take these to a professional dealer who hopefully will be able to give a reliable appraisal. However, we may yet be surprised, and you may be offered a more specific and reliable assessment than my efforts - fingers crossed
