Produced by Chris Curnow, Joseph Cooper, Stephanie Eason, and the Online Distributed Proofreading Team at https://www.pgdp.net. _Coins are a source of information much used by historians. Elaborately detailed mining landscapes on 16th-century German coins in the National Museum, discovered by the curator of numismatics and brought to the author's attention, led to this study of early mine-pumping devices._…
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