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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.
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Dubosq & Company’s dies are the only private California gold dies from 1850 or 1851 that were not engraved by Albrecht Kuner and have long been ascribed to U.S. Mint engraver James B. Longacre. Dubosq’s $5s are incredibly rare, with only three reported examples. The first of these, the Smith/Brand/Lilly specimen, is permanently impounded in the Smithsonian Institution. The second example, once owned by Byron Reed, is now in the collection of the Omaha Public Library. The last was a holed example, which was discovered by B. Max Mehl in 1944, and subsequently repaired. Its last public appearance was in 1951.
Obverse Description
Liberty Head with DUBOSQ & Co. on diadem, 1850, 13 stars around
Reverse Description
Federal eagle S.M.V. CALIFORNIA GOLD. FIVE D.
Catalog Information
GSID:
11772
Designer:
James B. Longacre
Obverse Designer:
James B. Longacre
Obverse Lettering:
DUBOSQ & Co., 1850
Reverse Designer:
James B. Longacre
Reverse Lettering:
S.M.V. CALIFORNIA GOLD. FIVE D.
Strike Type:
Business
Coin Shape:
Round
Edge:
Reeded
Variety:
Dubosq & Co.
Variety 2:
K-1
Coin Date:
1850
Denomination:
G$5
Designation:
MS
Mint Location:
San Francisco
Mintage:
2 known
Coinage Type:
Private & Pioneer Gold
Coinage Years:
1850
Composition:
Gold
Rarity:
8
PCGS #:
10176
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Subject: I would like to contribute catalog info to CDN for 1850 G$5 Dubosq & Co., K-1 MS
Body: Referring page: http://www.greysheet.com/prices/item/1850-dubosq-and-co-five-dollar-territorial-gold-coinage/gsid/11772 GSID: 11772 Title: 1850 G$5 Dubosq & Co., K-1 MS
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Coin Value History
1850 G$5 Dubosq & Co., K-1 MS
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1850 G$5 Dubosq & Co., K-1 MS
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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