Whitman Expo
Newly discovered 1867-S Half Eagle also shatters previous auction record in $10.665 million U.S. coins event; 1934 $10,000 Federal Reserve Note Leads $8.7 million U.S. currency auction.
U.S. Assay Office - Augustus Humbert Values
Greysheet & Red Book® PRICE GUIDE
The Greysheet Catalog (GSID) of the U.S. Assay Office - Augustus Humbert (1851–1852) series of Private & Pioneer Gold in the U.S. Coins contains 8 distinct entries with CPG® values between $19,000.00 and $5,000,000.00.
Augustus Humbert, a New York watchcase maker, was appointed United States assayer, and he placed his name and the government stamp on the ingots of gold issued by Moffat & Co. The assay office, a provisional government mint, was a temporary expedient to accommodate the Californians until the establishment of a permanent branch mint. The fifty-dollar gold piece was accepted by most banks and merchants as legal tender on a par with standard U.S. gold coins and was known variously as a slug, quintuple eagle, or five-eagle piece. It was officially termed an ingot.Our Sponsors
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Year
Series
Templeton Reid (1830, 1849)
C. Bechtler: Carolina & Georgia (1832–1842)
A. Bechtler: Carolina (1842–1922)
Norris, Gregg & Norris: San Francisco (1849–1850)
Moffat & Co.: San Francisco (1849–1850)
U.S. Assay Office - Moffat & Co. (1852–1853)
U.S. Assay Office - Augustus Humbert (1851–1852)
U.S. Assay Office - Moffat-Humbert (1852)
United States Assay Office of Gold (1852–1853)
Cincinnati Mining & Trading (1849)
Massachusetts & California Company (1849)
Miners Bank: San Francisco (1849)
J.S. Ormsby (1849)
Pacific Company (1849)
F.D. Kohler (1850)
Dubosq & Company (1850)
Baldwin (1850–1851)
Meyers & Company (1850)
Schultz & Co. (1851)
Dunbar & Company (1851)
Wass, Molitor & Co. (1852–1855)
Kellogg & Co. (1854–1855)
Oregon Exchange Company (1849)
Mormon Gold Pieces: Salt Lake City, Utah (1849–1860)
Clark, Gruber & Co. (1860–1861)
John Parsons & Company (1861)
J.J. Conway & Co. (1861)
State of California (1851)
Patterns & Die Trials (1849–1861)
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Events
Knoxville Coin and Currency Show - TN
Location: Rothchild Catering & Conference Center
Saturday, August 1, 2026
