Silver Davy medal with a representation of Sir Humphry Davy, awarded by the Royal Society in 1911 to Henry Armstrong FRS (1848-1947) for his work on the structure of benzene and dyes. 76mm diameter. Engraved by Albert Bruce Joy (d.1937) after design by N Macphail. Obverse, head and shoulders representation of Humphry Davy, right-facing in profile, signed A.B. JOY Sc N. MACPHAIL F . Reverse, inscription.