nice glass and in view of its origin, hopefully inexpensive - won't argue with you about the date, although these things never entirely easy to pin down, and some leeway on age always possible. Looks to have some wear around the outer foot rim.
Hope you won't object to some suggestions regarding your description............

My opinion on the bowl is more likely to be funnel or conical - trumpet tends to show more flaring, and this one looks to be fairly straight sided, and the cutting is generally referred to as slice or panel cutting rather than faceting.
The lower knop is a true baluster, and the addition of the upper one might have been someone trying to make this appear a little older - C18 glasses are often seen with multiple knops.
Unusual to see so much of the pontil scar remaining, even after what appears to be some considerable grinding/polishing. Does this ring when flicked, or thud only