Lot Essay
Herrengrund in the mining area, east of Preßsburg in Slovakia, was the centre of the manufacture of copper gilt objects, sometimes incorporating natural crystals. Most of this work seems to date from the late 17th and early 18th century. This double beaker is typical of their productions and the inscriptions are of interest. G. Egger (Barockes Kupfer aus Herrengrund und ornamentale Vorlageblätter, Vienna, 1979, p. 13.) records the process by which iron could be changed into copper by immersing it in the local water.