Whitman Expo
Numismaster.com ceased operations on July 31, leaving paid digital subscribers scrambling to pursue other options for their numismatic information.
Thank you to our sponsors!
Go check them out!
The 1866 Proof Three Cent Silver comes from a moderately low mintage for its series of 725 coins; most of which were saved leaving the issue readily available to collectors and relatively affordable. Scarce only in gem condition. Cameo pieces are far more difficult to locate in all grades and deep cameos are a rarity. Look for attractive toners as this series is full of them.
Obverse Description
A six-pointed star with a harp in the center is surrounded by UNITED STATES OF AMERICA on the periphery and the date positioned at the bottom. For the type III issues (1859-73) there is a single frame line around the star.
Reverse Description
The roman numeral III is centered in the design ensconced in a large, bejeweled letter C surrounded by 13 stars on the periphery. An olive sprig is added above the roman numerals.
Catalog Information
GSID:
3687
Designer:
James B. Longacre
Obverse Designer:
James B. Longacre
Obverse Lettering:
UNITED STATES OF AMERICA, 1866
Reverse Designer:
James B. Longacre
Reverse Lettering:
III
Fineness:
0.9
Weight (gr):
0.75 gr
Weight (oz):
0.0241 oz
Precious Metal Weight:
0.0217 oz
Strike Type:
Proof
Diameter:
14
Coin Shape:
Round
Edge:
Plain
Coin Date:
1866
Denomination:
3cS
Designation:
PR
Mint Location:
Philadelphia
Mintage:
725
Coinage Type:
Three cent silver
Coinage Years:
1859-1873
Composition:
0.9 silver; 0.1 copper
PCGS #:
93716
Send Catalog Feedback
To: editor@greysheet.com
Subject: I would like to contribute catalog info to CDN for 1866 3cS PR DCAM
Body: Referring page: https://www2.greysheet.com/prices/item/1866-3cs-deep-cameo-three-cent-silver-proof/gsid/3687 GSID: 3687 Title: 1866 3cS PR DCAM
Subscribe to View
View more data, info, and visualizations. Get access to retail and wholesale pricing as well as auction data.
Coin Value History
1866 3cS PR DCAM
Value By Grade
1866 3cS PR DCAM
CPG (retail) values
Currency
Grade Range
Grading Authority
Sort by
Pricing
Values
Greysheet & CPG® Values
| Grade | CAC | CPG Value (Retail) | Greysheet Price (Wholesale) |
|---|---|---|---|
| PR67 |
|
$26,500 | $1,234 |
| PR67 | - | $18,500 | $1,234 |
| PR66 |
|
$1,234 | $1,234 |
| PR66 | - | $1,234 | $1,234 |
| PR65 |
|
$1,234 | $1,234 |
| PR65 | - | $1,234 | $1,234 |
| PR64 |
|
$1,234 | $1,234 |
| PR64 | - | $1,234 | $1,234 |
| PR63 |
|
$1,234 | $1,234 |
| PR63 | - | $1,234 | $1,234 |
3-Cent Silver 3cS Type 1, 1851-1853 PR [Type]
![3-Cent Silver 3cS Type 1, 1851-1853 PR [Type]](https://images.greysheet.com/Ctc/Catalog/20200815/254d9964-9488-433b-8df0-389914c4dd45.jpg?MaxWidth=200&Mode=Pad&Scale=UpscaleCanvas&format=webp)
Worth: $200,000 – $240,000
1851 3cS PR
Worth: $200,000 – $240,000
3-Cent Silver 3cS Type 2, 1854-1858 PR [Type]
![3-Cent Silver 3cS Type 2, 1854-1858 PR [Type]](https://images.greysheet.com/Ctc/CatalogEntry/legendauctions_hibid_com_lot_47237878-0.20200717044549369.jpg?MaxWidth=200&Mode=Pad&Scale=UpscaleCanvas&format=webp)
Worth: $1,500 – $60,000
1854 3cS PR
Worth: $6,000 – $54,000
1855 3cS PR
Worth: $3,000 – $40,000
1856 3cS PR
Worth: $2,000 – $36,000
1857 3cS PR
Worth: $1,800 – $30,000
1858 3cS PR
Worth: $1,500 – $60,000
3-Cent Silver 3cS Type 3, 1859-1873 PR [Type]
![3-Cent Silver 3cS Type 3, 1859-1873 PR [Type]](https://images.greysheet.com/ctc/catalog/18663csPR.jpg?MaxWidth=200&Mode=Pad&Scale=UpscaleCanvas&format=webp)
Worth: $400 – $17,000
1859 3cS PR
Worth: $500 – $8,400
1860 3cS PR
Worth: $400 – $12,000
1861 3cS PR
Worth: $400 – $20,400
1862 3cS PR
Worth: $400 – $9,000
1863 3cS PR
Worth: $400 – $24,000
1863/2 3cS PR
Worth: $470 – $13,200
1866 Silver Three-Cent Piece. Proof-65 Deep Cameo (PCGS).
$4,080
1866 3cS PCGS/CAC Proof 64 DCAM
$3,400
3CS 1866 PCGS PR66+ DCAM CAC EX LEGEND COLLECTION
$17,625
1866 3CS PR65 Deep Cameo PCGS. CAC. ...
$4,201
1866 3CS PR64+ Deep Cameo PCGS. ...
$1,762
1866 3CS PR66 Deep Cameo PCGS....
$6,900
3CS 1866 PCGS PR65 DCAM CAC
$4,935
1866 3CS PR64 Deep Cameo PCGS. CAC. ...
$1,880
1866 3CS PR65 Ultra Cameo NGC. ...
$4,935
1866 3CS PR64 Deep Cameo PCGS. ...
$1,380
$7,762
1866 3CS PR64 Deep Cameo PCGS. ...
$1,725
1866 3CS PR65 Ultra Cameo NGC. A decisively struck and essentially untoned representative of this postwar trime issue, one ...
$3,565
Greysheet News
Greysheet Offers Former Numismaster Subscribers 3 Months Free Subscription
8/10/2026
Special Quarters Headed for Circulation
The search is on for special quarter dollars that will be placed in circulation by the United States Mint as part of the nation's Semiquincentennial celebration.
8/10/2026
The Business of Numismatics: August 2026 Greysheet Editor's Letter
With the month of July and all the celebrations of Independence Day behind us, the rare coin market looks with anticipation to August.
8/7/2026
Events
Heritage Auctions: US Currency Tuesday Select Auction
Location: Heritage Auctions
Tuesday, June 2, 2026
Heritage Auctions: World Paper Money Tuesday Select Auction
Location: Heritage Auctions
Tuesday, June 2, 2026
Heritage Auctions: US Coins Tuesday & Wednesday Select Auction
Location: Heritage Auctions
Wednesday, June 3, 2026