672811 Portrait of Basil Valentine. (engraving); (add.info.: Basil Valentine is the Anglicised version of the name Basilius Valentinus, who was allegedly a 15th-century alchemist, There are claims that he was the Canon of the Benedictine Priory of Saint Peter in Erfurt, Germany but according to John Maxson Stillman, who wrote on the history of chemistry, there is no evidence of such a name on the rolls in Germany or Rome and no mention of this name before 1600, During the 18th century it was suggested that the author of the works attributed to him was Johann Tholde); Universal History Archive/UIG; out of copyright.