Whitman Expo
His free weekly newsletter offers insights on the coin and metals markets, and consumer education.
Thank you to our sponsors!
Go check them out!
The Clark Gruber “Mountain $20,” has been considered a key to the pioneer gold series since the early 20th century. Today, there are only 15 examples encapsulated at either of the third- party grading services, and a trio of genuine, ungradable examples are known. There are three uncirculated Mountain $20s in private hands, and any lustrous, original coin would qualify for the condition census. In 2006, numismatists Andy Lustig, Ron Karp, and David J. McCarthy discovered a proof striking of the Mountain $20 that apparently traced its provenance back to Emanuel Henry Gruber.
Obverse Description
Mountain above DENVER encircled by PIKES PEAK GOLD TWENTY D.
Reverse Description
Federal eagle CLARK GRUBER & CO. 1860
Catalog Information
GSID:
376019
Obverse Lettering:
DENVER, PIKES PEAK GOLD TWENTY D.
Reverse Lettering:
CLARK GRUBER & CO. 1860
Strike Type:
Proof
Coin Shape:
Round
Edge:
Reeded
Variety:
Clark, Gruber & Co.
Variety 2:
K-4
Coin Date:
1860
Denomination:
G$20
Designation:
PR
Mint Location:
Denver, Colorado
Mintage:
unique
Coinage Type:
Private & Pioneer Gold
Coinage Years:
1860-1861
Composition:
Gold
Rarity:
Unique
PCGS #:
10147
Send Catalog Feedback
To: editor@greysheet.com
Subject: I would like to contribute catalog info to CDN for 1860 G$20 Clark, Gruber & Co., K-4 PR
Body: Referring page: http://livetest.greysheet.com/prices/item/1860-clark-gruber-twenty-dollar-territorial-gold-coinage-proof-strike/gsid/376019 GSID: 376019 Title: 1860 G$20 Clark, Gruber & Co., K-4 PR
Subscribe to View
View more data, info, and visualizations. Get access to retail and wholesale pricing as well as auction data.
Pricing Data Not Yet Available
We are constantly adding to our pricing database and prioritize user requests. Click below to request pricing for this item.
Request Pricing1860 G$2 1/2 Clark, Gruber & Co., K-1 MS
Worth: $3,800 – $90,000
1860 G$5 Clark, Gruber & Co., K-2 MS
Worth: $3,250 – $360,000
1860 G$10 Clark, Gruber & Co., K-3 MS
Worth: $12,500 – $240,000
1860 G$20 Clark, Gruber & Co., K-4 MS
Worth: $200,000 – $1,200,000
1861 G$2 1/2 Clark, Gruber & Co., K-5 MS
Worth: $3,200 – $96,000
1861 G$5 Clark, Gruber & Co., K-6 MS
Worth: $3,600 – $67,200
1861 G$10 Clark, Gruber & Co., K-7 MS
Worth: $5,600 – $108,000
1861 G$20 Clark, Gruber & Co., K-8 MS
Worth: $42,000 – $275,000
Greysheet News
Consumer Advocate Mike Fuljenz Wins NLG's Newsletter Award
9/15/2026
Incredible Rarities Shatter Records Amid Furious Bidding at Stack's Bowers Galleries' Summer 2026 Global Showcase Rarities Night Session
Stack's Bowers Galleries, one of the world's largest and most prestigious rare coin auction houses, is proud to announce record breaking results from the Rarities Night session of its annual Summer Global Showcase Auction.
9/15/2026
Five U.S. Coins Bring 7 Figures in $67 Million+ Heritage ANA Auctions
Scandinavian gold rarities also command exceptional results.
9/11/2026
Events
Heritage Auctions: US Coins Tuesday & Wednesday Select Auction
Location: Heritage Auctions
Wednesday, July 1, 2026
Heritage Auctions: World & Ancient Coins Wednesday & Thursday Select Auction
Location: Heritage Auctions
Thursday, July 2, 2026
