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 shows age related wear and tear to the rim of the foot commensurate with some 250 years of use. It has a rough pontil mark on the underside of the foot.

The glass has a plain bell-shaped bowl measuring 6.6 cm (2.6 inches) in diameter at the rim. The bowl sits on a colour twist stem consisting of an opaque white multi-ply corkscrew edged on one side in translucent emerald-green and on the other in opaque iron-red, a pair of heavy opaque white spiral threads between. The stem ends in a conical foot which measures 7.2 cm (2.9 inches) in diameter. The glass is 15.8 cm (6.3 inches) in height. There are no chips, cracks, significant scratches or any obvious evidence of restoration. There are a couple of tiny unburst bubbles in the metal of the bowl dating from manufacture. There is a collector's sticker attached to the underside of the foot.
Lead glass weighing in at 170 g. (~ 6 oz.).
Provenance: The Harald Leuba Collection. Previously with Delomosne and Son, 12th July 1984.
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.
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