High Quality Content by WIKIPEDIA articles! Valentin Rose the Elder was a German pharmacist and chemist who was a native of Neuruppin. He is remembered for creation of a fusible alloy known as Rose metal, which is comprised of lead, bismuth and tin. Beginning in 1761, he was owner and manager of a laboratory and pharmacy in Berlin known as Zum Weißen Schwan (To White Swan). After his death in 1771, famed chemist Martin Heinrich Klaproth (1743 1817) became manager of the establishment. His son, also named Valentin Rose, was a noted pharmacist.