This conical flask has a solid silver bayonet or captured cap. It is hallmarked Birmingham 1912, the silversmith's stamp is "J.Y & S" for John Yates & Sons.
The hinge of the cap is stamped "Harrods Ltd", the famous Knightsbridge department store
The flask is handblown heavy crystal

The mahogany coloured case is lined with doeskin or chamois. 
The long girth strap is attached so that the flask will sit on the near-side of the saddle. 
The case closes with a billet fastening and it has a dark top strap which attaches the flask to the D ring of the saddle.

Dimensions :
Length (of case): 9" (23cm)

Weight 597g ( 1lb 5oz)