When gold was found in California in 1848 the territory had almost no coin. Miners paid in gold dust, which merchants took at a discount, while the Custom House at San Francisco insisted on gold or silver coin for duties. Edgar Adams, who searched the newspapers of the period, tells how the first private gold pieces filled that gap. The earliest he could date is a five-dollar piece of Norris, Gregg & Norris, described in the Alta California on May 31, 1849. Moffat & Co., run by the New York assayer John L. Moffat, issued stamped rectangular ingots and then five- and ten-dollar pieces closely modeled on federal coins, and these passed at par.
Several groups of 1849 brought coining equipment or at least dies with them. The Pacific Company pieces, which Adams credits to David C. Broderick and Frederick D. Kohler, were hammer-struck and assayed well below face value. J. S. Ormsby & Co. struck undated pieces in Sacramento, the Miners' Bank issued a ten-dollar piece late in the year, and the Cincinnati Mining and Trading Company and the Massachusetts and California Company left pieces that Adams took for trials of plans that were dropped. In 1850 Dubosq & Co. and Baldwin & Co. joined in, and Kohler, as State Assayer, stamped ingots for the State Assay Office.
Congress answered with an act of September 30, 1850 that allowed the Treasury to contract with a California assayer for ingots stamped by a United States Assayer. Moffat & Co. took the contract, Augustus Humbert was appointed, and from about January 31, 1851 the office issued octagonal fifty-dollar pieces. In March 1851 assays of the private coins showed Baldwin's pieces short, the public turned against them, and most private coining stopped. The bulky fifty-dollar pieces did little for small trade, so Wass, Molitor & Co. began five- and ten-dollar pieces in January 1852 and Moffat & Co. struck a ten-dollar piece the same year. Curtis, Perry & Ward succeeded Moffat & Co. at the Assay Office in 1852 and added ten- and twenty-dollar pieces before the office closed on December 14, 1853.
The San Francisco Branch Mint opened in the Assay Office building on April 15, 1854, but produced little at first. Kellogg & Co., founded by two former Assay Office employees, filled the gap with twenty-dollar pieces from February 1854, and Wass, Molitor & Co. returned in 1855 with twenty- and fifty-dollar pieces. Adams treats the twenty-dollar dies prepared by Blake & Co. of Sacramento in 1856 as the last attempt at private coinage in California.





























