Elmgarden has dated this piece to the 1920s.
The flask is made by “ Goldsmiths & Silversmith Co Ltd”

The Flask is in beautiful condition throughout and a spectacular piece indeed. Fully hallmarked. delivery is included in the price of this lovely piece
SH188
Maker - Goldsmiths & Silversmith Co Ltd
Date - 1919
Letter - u
City - Birmingham
Weight - 354.7g/12.51oz
Dimensions
Length - 13.5cm
Width - 11.2cm
Depth - 3.2cm
Elmgarden has dated this piece to the 1920s.
You can view the stock and full dealer information on the Elmgarden Profile Page