https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13967981
Two peasants hold a red robe; cherubs blow wind and Mercury rests on water below; representing a stage in the process of alchemy. Coloured etching, ca. 18th century.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use