Eckfeldt, Jacob R., and William E. Du Bois. NEW VARIETIES OF GOLD AND SILVER COINS, COUNTERFEIT COINS, AND BULLION; WITH MINT VALUES.New York, 1851. Second edition. 8vo, original brown cloth paneled in blind and lettered in gilt. (6), 72, (2), xvi, 2, (16), 2 pages; 5 lithographic plates, mostly depicting pioneer gold coins. Spine worn with back strip partly lacking; very good or so. Originally published in 1850, New Varieties "was designed as a convenient and authentic manual for individuals or institutions dealing in the precious metals, and especially those engaged in the California trade, then newly opened."From the Heather Hardin-Hudson Collection