Watch List notes:

The Portland Collection, Commemorative Medals, Engineering: Gas, William Murdoch (1754 - 1839), the H. E. Jones London Medal, struck in gold, of the Institution of Gas Engineers and Managers, by Spink, 'H. Hollings, M. Sc., M. Inst. Gas E., W. K. Hutchison, B.A. & R. H. Griffith, D. Phil., For Joint Papers on 'Removal of Sulphur Compounds from Gas' Read on 2nd Novr 1937', bust of Murdoch l., rev. Science holds up a light, to l., scientific apparatus, to r., a gasometer, wt. 65.6gms., 9ct., 51mm., in case of issue, mint state
The H.E. Jones London Medal, instituted 1904, first presented in 1905, is an annual award for a paper which is accepted for presentation and is read at a general meeting of the Institution which deals with the principals involved in the construction of Works or plant for the manufacturer or distribution of gas.