Whitman Expo
The United States utilized a two-cent coin for just ten years, from 1864 to 1873.
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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.
Catalog Information
GSID:
11788
Obverse Lettering:
UNITED STATES OF AMERICA. 884 THOUS: TWENTY DOLS.
Reverse Lettering:
AUGUSTUS HUMBERT. UNITED STATES ASSAYER OF GOLD. CALIFORNIA. 1852.
Strike Type:
Proof
Coin Shape:
Round
Edge:
Reeded
Variety:
Augustus Humbert
Variety 2:
K-9
Coin Date:
1852/1
Denomination:
G$20
Designation:
PR
Mint Location:
California
Mintage:
2 known
Coinage Type:
Private & Pioneer Gold
Coinage Years:
1852
Composition:
Gold
Rarity:
8
PCGS #:
10194
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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: https://www2.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
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Coin Value History
1852/1 G$20 Augustus Humbert, K-9 PR
Value By Grade
1852/1 G$20 Augustus Humbert, K-9 PR
CPG (retail) values
Currency
Grade Range
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Pricing
Values
Greysheet & CPG® 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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Events
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Tuesday, June 2, 2026
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Wednesday, June 3, 2026