Fine antique pre-Georgian engraved with triangle and tulip mid section with a dot/block hatched top rim border. Several chips to base edges, but I believe this is at least c.1750......and/or earlier. Small fleck to top rim edge and even shows some shelf wear from being put upside down on a shelf to keep out the dust and bugs! I haven't found anything with this exact form which is what stumps me. High pitched ring when tapped, and glows very lightly with blacklight. I believe this is Dutch, but could be English.
Antique 18c English or Dutch Engraved Glass Wine Stem