How does a bayonet cap work?

The cap pushes down over a cork inside the collar and twists a short distance to lock into opposing pins. This action compresses the seal quickly and prevents leaks. Opening the flask requires a reverse twist and a gentle pull against the internal spring pressure of the cork.

Were these flasks used by the military?

Officers and regiments often carried silver flasks during campaigns and active service. Pieces frequently bear military association or regimental engraving from eras such as the Boer War. Rugged materials like crocodile leather helped protect the flasks during field use.

Can I still use an antique flask?

Many surviving pieces remain structurally sound enough to hold spirits today. The primary consideration is the condition of the internal cork inside the bayonet cap. A replacement cork may be necessary to ensure a watertight seal before filling.

How do I date my flask?

British silver pieces carry hallmarks that include a specific letter code for the year of assay. Comparing this letter against official assay office tables reveals the exact year of production. Stylistic shifts between Victorian, Edwardian, and Art Deco designs also offer a reliable guide to the decade.