you're quite right that glass travels, amazingly long distances at times too

- criss-crossing continents and the pond. I always hope that others, more knowledgeable, will look in on these things, but it happens rarely.
The fire polished rim on older pieces is often taken as an indication that something is likely not Continental Europe, where rims look to have been more frequently cut, polished and slightly bevelled, as opposed to U.K. fire polishing ............... but it's not a hard and fast rule.
Unsure of your comment Kelli about the foot being fire polished - assume you're referring to the cosmetic repair of a pontil scar?
Think you're correct in suggesting 'goblet' in view of the bucket shaped bowl - certainly a shape that's been around since the middle of the C18, and possibly more common in mainland Europe rather than the U.K.
However, this has exhausted my knowledge of these things, other than to say that if you don't have some reasonable wear and the glass looks perhaps a tad too bright, then your glasses may well not be period.
Assume you were unable to ask the seller for an indication of the origin of their glasses ............... I'm of the opinion that the engraving is unlikely to help in a positive way, unfortunately.