The World is Made of Glass Ltd. has dated this piece to the 1880s.
A reference to such a decanter can be seen in "Anthropologia Nova Or a New System of Anatomy Describing the Animal Oeconomy" which quotes "... thereby making it resemble a glass incorporator, used now-a-days to mix oil and vinegar. They were made by different companies but the stopper type suggests a Percival Vickers origin.

The decanter is in excellent condition for its age. This means, of course, that it shows the age related wear and tear to the rim of the base commensurate with some 150 years of use. The pontil mark at the base of the decanter has been polished out.

The body of the decanter consists of seven increasingly wide hoops and is a 19th century reproduction of an 18th century Georgian design. The base measures 7 cm (2.8 inches) in diameter. The decanter is 13.5 cm (5.4 inches) in height without the stopper and 17 cm (6.8 inches) tall with the stopper inserted. There are no chips, cracks, scratches or any evidence of restoration.
The stopper is of solid ball form with a number of small trapped air bubbles and is contemporary with the decanter. It is a good fit and we believe it to be probably be the original.
Weighing in at 570 g. (~ 1 lb. 4 oz.) these decanters look particularly impressive when used for olive oil or vinegar.
The World is Made of Glass Ltd. has dated this piece to the 1880s.
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