2-652-732 - The Print Collector/Heritage Images

Twelfth Key of Basil Valentine, 1651, illustrating that the Philosophers' Stone must be combined with gold to produce new gold, just as a lion eats a serpent to change it into its own substance. From Von dem gross Stein Uhralten by Basil Valentine. (Strasbourg, 1651). (Colorised black and white print).