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US Treasury in SF Receipt for Gold & Silver Ore Refining Patent, 1867

Currency:USD Category:Collectibles / Mining Start Price:50.00 USD Estimated At:100.00 - 200.00 USD
US Treasury in SF Receipt for Gold & Silver Ore Refining Patent, 1867
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Receipt from the office of the Assistant Treasurer to Frederick Morris for a deposit towards a patent application for “New Process for Amalgamating Gold and Silver Ores” dated May 21, 1867 and datelined San Francisco, CA. The Morris System for Amalgamating Gold and Silver Ores is described in detail in Mining & Scientific Press Vol. 47, p. 362. Morris patented a combination amalgamator and settler. 8.5 x 8" Deep horizontal fold.

Date: Location: San Francisco, California HWAC# 572051