E. Thomas & Williams have been making these working lamps in Aberdere since 1860. Each lamp has a unique serial number

The solid brass and the solid brass and copper lamp is made using the traditional Welsh specifications. The All Brass model was the style most frequently used in the mines. Brass does not spark when it hits rock and is therefore the safest metal to use underground. The base of this lamp is tooled from solid brass. The lamp is functional for personal use and burns lamp oil (kerosene). Each lamp comes in an attractive presentation tube with instructions and a brief history. It contains a single internal gauze, its dimensions are 10 “high and 3 “in diameter and it weighs more than 2.6 pounds,