On September 1, Stack's Bowers conducted a Rarities Night session in California as part of this firm's post-ANA World's Fair of Money® auction extravaganza.
With fewer than 15 examples known in private hands, the Kagin-1 Humbert $50 is as challenging to locate as a Kellogg $50. Three, or perhaps, four examples are known in mint state, and any choice AU specimen would be considered part of the condition census.
Obverse Description
Eagle clutching shield and scroll inscribed LIBERTY UNITED STATES OF AMERICA 880-THOUs 50D C
Reverse Description
50 punched in the center of engine turning
Catalog Information
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Subject: I would like to contribute catalog info to CDN for 1851 G$50 Humbert, 880 THOUS, 50 Rev, Lettered Edge, K-1 MS
Body: Referring page: http://www.greysheet.com/prices/item/1851-humbert-fifty-dollar-lettered-edge-880-thous-50-reverse-kagin-1-territorial-gold-coinage/gsid/11782 GSID: 11782 Title: 1851 G$50 Humbert, 880 THOUS, 50 Rev, Lettered Edge, K-1 MS
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Values
| Grade | CAC | CPG Value (Retail) | Greysheet Price (Wholesale) |
|---|---|---|---|
| MS62 |
|
$576,000 | $1,234 |
| MS62 | - | $480,000 | $1,234 |
| MS61 |
|
$1,234 | $1,234 |
| MS61 | - | $1,234 | $1,234 |
| MS60 |
|
$1,234 | $1,234 |
| MS60 | - | $1,234 | $1,234 |
| AU58 |
|
$1,234 | $1,234 |
| AU58 | - | $1,234 | $1,234 |
| AU55 |
|
$1,234 | $1,234 |
| AU55 | - | $1,234 | $1,234 |
| AU53 |
|
$1,234 | $1,234 |
| AU53 | - | $1,234 | $1,234 |
| AU50 |
|
$1,234 | $1,234 |
| AU50 | - | $1,234 | $1,234 |
| XF45 |
|
$1,234 | $1,234 |
| XF45 | - | $1,234 | $1,234 |
| XF40 |
|
$1,234 | $1,234 |
| XF40 | - | $1,234 | $1,234 |
| VF20 |
|
$1,234 | $1,234 |
| VF20 | - | $1,234 | $1,234 |
Greysheet News
Commissioners reviewed reverse designs for the four American Innovation dollars scheduled to be released in 2028 and obverse and reverse designs for the 2027 issues in the Comic Art Coin and Medal Program.
The rare coin market so far in 2026 has been somewhat volatile, with greater price swings happening over a shorter period of time when compared to historical norms.





