This 1920s–1930s copper and brass bed warmer is a classic example of an early 20th-century cylindrical foot warmer or hospital water flask. Its specific dimensions—10 inches tall by 3 inches wide—make it a highly collectible, compact variant. The fact that the screw cap still works and seals properly significantly increases its utility, historical authenticity, and resale value. Key Characteristics & Valuation Factors :- Design & Form :- These narrow, cylindrical metal flasks were commonly manufactured by prominent British and European metalware companies during the interwar period. Popular makers of the era included brands like Shirley's HECLA, WAFAX, and Orme & Evans Co. The Working Cap :- A functioning brass screw-top lid—often featuring a built-in metal ring handle or loop—is critical. It prevents leaking, preserves the original threading, and keeps the item structurally complete. Material Composition :- Typically, the main body is constructed of solid rolled copper for superior heat retention, while the top collar, heavy screw cap, and handles are cast from brass for added durability. PLEASE SEE PHOTOGRAPHS FOR ADDITIONAL INFORMATION/DETAILS