Loos, G.B. DIE KUNST FALSCHE MÜNZEN ZU ERKENNEN. EIN BUCH FÜR ALLE, DIE DAMIT NICHT BETROGEN WERDEN WOLLEN, ALSO AUCH FÜR NUMISMATIKER UND SAMMLER VON ANTIKEN UND MODERNEN MÜNZEN. Berlin: Bei G. Reimer, 1828. Small 8vo, modern white boards, lettered and decorated in gilt. xxxv, (1), 222, (2) pages; large folding engraved plate depicting apparatus for determining specific gravity. Untrimmed. Fine. One of the earliest comprehensive works on counterfeit coins and how to detect them; designed for numismatists and collectors of ancient and modern coins as well as merchants and the general public. Rare. Leitzmann 82.