Woodbridge Antiques has dated this piece to the 1920s.
The maker's mark is also very clear for the renowned silversmiths: Goldsmiths& Silversmiths Company.

A fine tankard and a good heavy gauge of silver would make a perfect gift for a special birthday, or a great christening gift!
Condition: In great antique condition.
Hallmarks: London 1925 by Goldsmiths & Silversmiths.
Measurements:
Height: 10.5 cm
Diameter width at rim: 7.1 cm
Width including handle: 12.2 cm
Weight: 248 grams (heavy gauge).
Weights and measurements are approximate.
Woodbridge Antiques has dated this piece to the 1920s.
Specialists in quality antique silver, fine jewellery & accessories
You can view the stock and full dealer information on the Woodbridge Antiques Profile Page