Web site: https://www.butlersantiques.com/
This is a green glass wine jug (I don't think red wine looks good in a green jug - so I cannot call it a claret jug). It has a lightly writhen body and tricorn lip with a clear glass ball stopper and a plain loop handle.
This is a decorative jug from which it would be fine to serve white wine.
It does have a slightly uneven base causing it to wobble if pushed - hence its low price.