Ad 1: Enlarged edition of a treatise on metallurgy, especially meant for gold- and silversmiths, written by the master of the Leipzig mint of Modestin Fachs, Prince of Anhalt. He was responsible for assaying metals. The text mainly concerns gold and silver, but the second part covers the managerial aspects of the mint. The third part gives lists of alchemical signs, values of several currencies, additional infomation on gold and silver, other metals and alloys. The first edition was published at Leipzig in 1595.
Ad 2: First and only edition of an introduction to metallurgy and mining. "Ubersichtliche und selbstständige Anleitung zur Probirkunst, von den alten Probierbüchlein deutlich unterschieden" (Darmstädter).
Ad 3: First and only edition of a collection of 153 aphorisms concerning metallurgy and alchemy, also focussing on the medicinal qualities of metals, written by the court physician at Stollberg, David Kellner. He studied medicine at Helmstedt and graduated there in 1670, writing two dissertations on surgical practices. He pursued chemistry and metallurgy, opposing alchemical practices, and wrote a number of books on these subjects.
Ad 2 is partly unopened. All three works in very good condition. Ad 1: Ferchl 149; Ferguson I, p. 261; VD17 12:644313W; not in Hoover. Ad 2: Brüning 2660; Ferchl 249f; Ferguson I, p. 417; Darmstädter, Probirbüchlein, p. 197; VD17 39:117831P; not in Hoover; Schuh. Ad 3: Bolton 572 (only the appendix); Ferguson I, p. 456; cf. DSB VII, 284; Ferchl 269; VD17 3:601877S (1686 ed.); Wellcome II, p. 383; for the author: Schuh, Mineralogy, 1620.