Incandescent carbon filament electric lamp, detachable 'candlestick' cap that fits into a lamp holder, made by Swan Electric Light Company Ltd in Benwell, Newcastle-upon-Tyne, c.1879, this is an early example of a commercial light bulb of the type patented by Joseph Swan, the vendor acquired the bulb from a public house on the Isle of Sheppy during 1940, the filament was broken in an air raid that night