Hello there, this is a rather strange glass. it looks like a Georgian rummer, it very clear glass with little wear to the base a rough pontil with a wheel engraved scene of a house with a letter F on the top and and two trees either side.
It's thin glass and light weight.
It's 4 3/4 inches in height, 3 1/4 inches across the rim and 3 inches across the base.
I thinking it might be Victorian but that's just a guess.
Any help welcome regards Chris.