This uniface striking from an obverse die depicts William Murdoch, the father of gas innovation, and probably dates from the latter part of the 19th century. The actual medal was awarded by the Gas Institute for originality in connection with the manufacture and application of coal gas, the Corporation of Birmingham had bought out the two original companies that manufactured and supplied gas to the area, in 1874. The reverse uniface striking depicts Perkin, Bunsen, Malam and Clegg below a gasometer and is also in the Coins & Medals collection at Birmingha Museums & Art Gallery.