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San Francisco,CA - Memorandum of Gold and Silver Bullion Deposited at the United States Mint at San

Currency:USD Category:Coins & Paper Money / Bullion Start Price:10.00 USD Estimated At:20.00 - 50.00 USD
San Francisco,CA - Memorandum of Gold and Silver Bullion Deposited at the United States Mint at San
Memorandum of Gold Bullion was submitted to the United States Mint at San Francisco by Miner Ferguson McArdle. McArdle submitted this memorandum with his findings classified as amalgam cakes. Amalgam is a mixture between mercury and another metal, in this case gold or silver. When gold extraction was used with amalgam, the ore deposits were usually found in large gray lumps. These amalgam lumps were typically heated at very high temperatures; the gold would separate, and the mercury could be reused. The resulting gold was typically referred to as “flour gold.” This assay memorandum is numbered 1480, and has assay categories for weight before and after melting, the fineness and value for the quantities of gold and silver. It measures 9 ½” x 6”. The mint superintendant PE Springer signed. It is dated September 10, 1920. Overall good condition.