The World is Made of Glass Ltd. has dated this piece to the 18th Century.
The lamp is in excellent condition for its age.
It has a rough pontil mark on the foot which is nicely striated as is the bowl.

The lamp has a flattened ovoid reservoir measuring 7.5 cm (3 inches) in diameter at its fullest and measuring 2.7 cm (1.1 inch) in depth. The reservoir sits on a collar and an incised twist stem with a basal collar, and a conical foot which measures 6.3 cm (2.5 inches) in diameter. The lamp is 8.5 cm (3.4 inches) in height. There are no chips, cracks, significant scratches or any obvious evidence of restoration.
It is made from English lead metal weighing in at 145 g. (~ 5 oz.).
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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