Ein kunstlich undt gerecht Probier Buechlein, 1532

Manuscript on paper of Andreas Oberlender, Probter Buechleln, 1532, an unsigned later copy executed about 1600, with a few additions. A metallurgical experiment book of the type circulated among those interested in alchemy, mining, and metallurgy in the 16th century, this text treats at length several minerals with a metallic luster such as marcasite, especially crystallized iron pyrites, which were often used ornamentally, in costume jewelry