Hi, welcome to the forum.
I saw one similar to this today, about the same size but in clear glass. It had ribs with a slight twist and the knob at the end and seemed reasonably well made/blown.
Below the lip at the open end there was a metal band on the outside, about 1.5cm wide, with three equispaced hooks welded on such that it would hang from the hooks with the open end up, so assume some sort of planter. It looked commercial and modern.
It looks like your example expands just before the opening, so that would retain a hanging ring that was slipped on from the bottom. So maybe a planter.