France, 50th Anniversary of the Société Chimique de France, 1907, a bronze medal, obverse after D. d’Angers, the reverse signed C.O., issued by E.P. Tasset, bust of Antoine Lavoisier right, reverse legend, wreath around, 59mm. About extremely fine, scarce (£30-40)

Antoine Laurent Lavoisier (1743-94), the founder of modern chemistry, elected to the Académie des Sciences, 1768; executed by guillotine, 1794