Aramis Antiques has dated this piece to the 1910s.
The tankard stands on a footed stepped base, has a splendid scrolled handle in the Georgian style and the bowl has a very restrained but effective baluster shape (it slants in slightly from the lower part of the bowl and outwards again just below the rim), which gives it a modern feel for the time it was made. In exceptionally good condition, with no dents or dinks.
Aramis Antiques has dated this piece to the 1910s.
You can view the stock and full dealer information on the Aramis Antiques Profile Page