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.
No AU50 photos on record yet — showing auction lots of this item in other grades
Coin Value History
1860 G$20 Clark, Gruber & Co., K-4 AU50
AU50
$276,000
1860 $20 Clark, Gruber & Co. Twenty Dollar XF45 PCGS. K-4, High R.6. ...
XF45
PCGS
$305,500
AU55
$3,105
1860 $20 Clark, Gruber $20 Copper Pattern--Scratched, Cleaned--ANACS. AU Details, Net XF40. K-4a, R.5. Struck as a pattern...
XF40
ANACS
$2,300
1860 Clark, Gruber & Co. Twenty Dollar XF40 ANACS. ...
XF40
ANACS
$3,565
1860 $20 Clark, Gruber & Co. Twenty Dollar MS64 NGC. Kagin-4, High R.6. To the best of our knowledge, this is the first tim...
MS64
NGC
$690,000
1860 Clark, Gruber & Co. $20. K-4. Rarity-6+. AU Details--Repaired (PCGS).
$84,000
1860 Clark, Gruber & Co. $20. K-4. Rarity-6+. Unc Details--Repaired (NGC).
$144,000
1860 Clark, Gruber & Co. $20. K-4. Rarity-6+. AU Details--Repaired (PCGS).
$120,000
1860 Clark, Gruber & Co. $20. K-4. Rarity-6+. AU Details--Repaired (NGC).
$57,600
Greysheet News
Review Held for Dollars, Comic Art Coins and Medals
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.
11/6/2026
The Business of Numismatics: November 2026 Greysheet Editor's Letter
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.
11/4/2026
Events
Heritage Auctions: US Currency Tuesday Select Auction
Location: Heritage Auctions
Tuesday, September 1, 2026
Heritage Auctions: World Paper Money Tuesday Select Auction
Location: Heritage Auctions
Tuesday, September 1, 2026
Heritage Auctions: World & Ancient Coins ANA Signature Auction & Platinum Session
Location: Heritage Auctions
Tuesday, September 1, 2026





