I have this bottle, the like of which I have never seen before (nor has Margaret and she is ex-president of a winemakers guild).
It is a finely blown bottle with a long neck and what looks like a bunch of grapes INSIDE the bottle but open to the air via a side vent.
Does it have a function or is it just a glass blower showing off his skills? It is along the same lines as a glass frigger ship inside a bottle.
Approx 30cm tall.