Marris Antiques has dated this piece to the 19th Century.
Base dia: 10 cm.
Condition: All in good condition.
The pattern number is given as 10940 and is in the Stuart and Sons pattern books held at the Wedgwood Museum. The engraving is by the Kny brothers workshop. See image No. 11.

Langbridge, R.H. (1975) Edwardian Shopping; a selection from the Army and Navy Stores catalogues, 1898-1913 David & Charles, Newton Abbot.
Army & Navy Co-operative Society (1969) ‘Yesterday's shopping: the Army & Navy Stores Catalogue, 1907; a facsimile of the Army & Navy Co-operative Society's 1907 issue of Rules of the Society and price list of articles sold at the stores’. David & Charles, Newton Abbot.
Thanks to Dr Eleanor Feldman for this information.
Marris Antiques has dated this piece to the 19th Century.
Robert marris specialises in 18th, 19th and early 20th-century english and irish glass.
You can view the stock and full dealer information on the Marris Antiques Profile Page