• 1851 U.S. Assay Office - Augustus Humbert Values

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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 7 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

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 7 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.

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1851 G$50 Humbert, 880 THOUS, 50 Rev, Lettered Edge, K-1 MS
Value Range: $42,500 - $480,000
$42,500 - $480,000
1851 G$50 Humbert, 880 THOUS, No 50, Lettered Edge, K-2 MS
Value Range: $45,000 - $312,000
$45,000 - $312,000
1851 G$50 Humbert, 887 THOUS, 50 Rev, Lettered Edge, K-4 MS
Value Range: $50,000 - $624,000
$50,000 - $624,000
1851 G$50 Humbert, Target Rev, 880 THOUS, Reeded Edge, K-5 MS
Value Range: $25,000 - $200,000
$25,000 - $200,000
1851 G$50 Humbert, Target Rev, 887 THOUS, Reeded Edge, K-6 MS
Value Range: $19,000 - $430,000
$19,000 - $430,000
1851 G$50 Humbert, Target Rev, 887 THOUS, Reeded Edge, K-6 PR
Value Range: $5,000,000 - $5,000,000
$5,000,000 - $5,000,000
1851 G$50 Humbert, Target Rev, 887 THOUS, No 50, Lettered Edge, K-7 MS
Value Range: $42,000 - $108,000
$42,000 - $108,000

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1849 G$5 Moffat & Co., K-4 MS

Auction Ends: 7/16/2026

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