The World is Made of Glass Ltd. has dated this piece to the 18th Century.
The glass is in excellent condition for its age.
It has a rough pontil mark on the underside of the foot.

The glass has a tulip-shaped bowl measuring 6.5 cm (2.6 inches) in diameter at the everted rim. The bowl is cut with petal-like facets to the base, and sits on a hexagonal slice stem. The rarest of all facet stem glasses are those with such plain hexagonal stems (see Delomosne and Son, English Wineglasses with Faceted Stems (2005), p.5, fig.d). When looking down at the glass into the bowl it makes the pattern of the six-petaled Jacobite rose which some consider to be deliberate. The stem leads to a facet cut conical foot that measures 7.8 cm (3.1 inches) in diameter. The glass is 15.5 cm (6.2 inches) in height. There are no chips, cracks, significant scratches or any obvious evidence of restoration. There is a collector's sticker to the underside of the foot for the Peter Eales collection.
English lead glass weighing in at 175 g. (~ 6 oz.).
Provenance: Peter Eales Collection
The World is Made of Glass Ltd. has dated this piece to the 18th Century.
Dealing in antique and collectable glass from the 17th to the 21st century.
You can view the stock and full dealer information on the The World is Made of Glass Ltd. Profile Page