Hi
A somewhat belated response!

Your glass is a Georgian plain stem wine goblet C1740-50. The general addage with Georgian glass is that the foot should be wider than the bowl; but there are limits when it comes to goblets. An overly large foot would be cumbersome and it is not unusual to find a large goblet (and yours is large) to have a foot the same size or smaller than the bowl. The foot does look like it has had some restoration though? You should find a fairly consistent profile to the foot edge to both the upper and lower surface and you should also be able to follow the tooling marks all the way around the underside of the foot. Any polished 'flats' are obviously suspect and any hazy' area's (pumice haze from restoration) are also signs that the foot has been fiddled with

You would also expect to see appropriate and consistent wear all the way around the bearing surface at the edge. The bowl rim looks fine.
Looks like a nice glass. If un-restored and you still have it; I'll buy it!
Trev.