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An enthroned king, wearing three crowns and with a sword in his mouth, having vanquished a green seven headed hydra; an archangel with a key imprisons Lucifer in chains by a roaring fire; representing the culmination of the alchemical process and the sublimation of base matter. Coloured etching after an etching, ca. 17th century.. Credit: Wellcome Collection. Attribution 4.0 International (CC BY 4.0)