Medals: a die-engraver in his workshop (top), with diagrams of die-engraving tools (below). Engraving by B.L. Prevost after F. Boucher.

Licence: Public Domain Mark

Credit: Medals: a die-engraver in his workshop (top), with diagrams of die-engraving tools (below). Engraving by B.L. Prevost after F. Boucher. Wellcome Collection. Source: Wellcome Collection.