The unprecedented crossover underscores his personal efforts to combat “grade inflation.”
There are approximately 20 1852/1 Humbert $20s in private hands today. Between three and five examples are mint state. A pair of proof 1852/1 $20s are also known, the first of which traces its provenance back to Augustus Humbert, while the second originally belonged to Assay Office employee and founder of Kellogg & Company, John Glover Kellogg.
Obverse Description
Eagle clutching shield and ribbon UNITED STATES OF AMERICA. 884 THOUS: TWENTY DOLS.
Reverse Description
Engine turning AUGUSTUS HUMBERT. UNITED STATES ASSAYER OF GOLD. CALIFORNIA. 1852/1.
Book Reference
Approximately twenty 1852, 2 Over 1 Humbert $20 coins exist in private hands today. Between three and five examples are Mint State. A pair of Proof $20 coins are also known, the first of which traces its provenance back to Augustus Humbert, while the second originally belonged to Assay O!ce employee John Glover Kellogg, founder of Kellogg & Company.
Obverse: Eagle clutching a shield and a ribbon inscribed LIBERTY, with UNITED STATES OF AMERICA TWENTY DOLLS 884 THOUS
Reverse: Engine-turned pattern with a tab.let reading AUG.USTU.S HUMBERT. UNITED STATES ASSAYER OF GOLD CALIFORNIA 1852 (with 2 over 1)
Catalog Information
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Subject: I would like to contribute catalog info to CDN for 1852/1 G$20 Augustus Humbert, K-9 PR
Body: Referring page: http://dev.greysheet.com/prices/item/1852-over-1-augustus-humbert-twenty-dollar-kagin-9-territorial-gold-coinage-proof/gsid/11788 GSID: 11788 Title: 1852/1 G$20 Augustus Humbert, K-9 PR
View more data, info, and visualizations. Get access to retail and wholesale pricing as well as auction data.
Values
| Grade | CPG Value (Retail) | Greysheet Price (Wholesale) |
|---|---|---|
| PR65 | $1,140,000 | $1,234 |
| PR64 | $870,000 | $1,234 |
| PR63 | $1,234 | $1,234 |
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The designs will be featured on a $5 gold coin, a $1 silver coin, and a half dollar clad coin.





