very annoying that revival, I'm sure it confuses a lot of people, me included - although not sure about the meaning of eclectic in this context - the overall shape isn't uncommon (not necessarily with a folded foot though). So you should find some more if you hunt around, but the decoration will be the problem.
In theory you should be able to recognize this as being of the period Peter has given - from the other side of the room - whether you can see the folded foot or not - in view of the style and type of cut decoration.
The style of cutting is very typical of late Georgian/Regency - especially the herringbone band or blazes as they're often called, and although the bucket bowl was in vogue mid C18, at that period it wouldn't have been in the proportions and style we see it here. This piece appears to be borrowing a lot from the English rummer style that came into it's own around 1780 ish, although I'm not so sure that there was ever a specific shape/size of glass for port, but like most drinks it'll taste the same whatever the glass you drink it from.

However, there's something about this piece that makes me think provincial, or perhaps Irish - it has an almost naive or rustic quality about the cutting. Could be wrong - just my opnion.