This conical flask has a silver plated bayonet or captured cap. 
The flask is handblown heavy crystal

The red brown coloured case has a very good patina. It is stamped "Walklate Berkhamsted", John Walklate (1819-1894) was born in Hemel and was a saddler and harness maker all his working life, his shop seems to have ceased trading in the  mid 20th century

The case closes with a billet fastening

The  case has its original top strap which attaches the flask to the D ring of the saddle. 

The case has a keeper to hold a strap to attach to the girth so that the flask can sit on the either side of the saddle. 

Dimensions :
Length (of case): 9" (22.8cm)

Weight 406g ( 14¼oz)

Unfortunately the new GSPR regulations do not allow this item to be shipped to the EU or Northern Ireland