Johann Peter Magnus, M.D. Physician at Vienna. Oval in rectangle, in corners, emblem, coat-of-arms, ornament.

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: Johann Peter Magnus, M.D. Physician at Vienna. Oval in rectangle, in corners, emblem, coat-of-arms, ornament. Wellcome Collection. Source: Wellcome Collection.