Hi , :cry: Sorry for this , but i believe your sweetmeat glass to be 19th century, several things suggest this, the small platform that is between the bottom knop on the stem and the foot is not a feature seen on 18th century glasses,though very common on all types of early to late 19thc glass items, as is the form of the stem itself , reffered to as a dumbell stem,I would also expect the foot to be more conical ie less flat underneath than this 1 is,as can be seen by the line of ware which is someway in from the edge of the foot,more oviously though i believe is its weight and the apparent thickness of the glass , 18thc glass does have a heavy feel to it ,early ones being called Heavy Balusters ,but yours is way way to heavy even for 1 of those , I have many and can say that for a glass of this size made in the 18thc its weight would be 1/2 or less of yours and would also be more thinly blown. All of this(and that I have seen many before) adds up to my giving yours a 19thc date , in the 18thc style , but also add that it is not without its own merits and should not be dismissed in the appreciation dept for being 19th century, unfortunately though it makes a great difference to its commercial value,
Cheers,
Peter.