Coin Specifications

Category: Seated Liberty Dimes (1837-1891)
Mint: San Francisco
Mintage: 135,000
Catalog: KM-92
Obverse Designer: James B. Longacre
Reverse Designer: James B. Longacre
Composition: Silver
Fineness: 0.9000
Weight: 2.49g
ASW: 0.0723oz
Melt Value: $1.28 (10/26/2016)
Diameter: 17.9mm
Edge: Reeded
Numismatic specification data provided by Krause Publications NumisMaster.
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1866 S 10C MS obverse 1866 S 10C MS reverse

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There are no NGC varieties for this coin.

Description & Analysis

Six obverse dies were shipped to the San Francisco Mint for 1866 dime coinage, but it appears that only two of these were used. Paired with two reverse dies leftover from earlier shipments, the result was three known die marriages.

This issue is rare across all grades, with Mint State pieces being especially elusive. Most 1866 S dimes were poorly struck at Liberty's head and the opposing design elements of the bow knot and mintmark. The mintmark, in particular, is so shallow on this date that many examples have been offered as 1866(P) dimes in the past, and only a study of die characteristics has enabled authenticators to sort out the confusion.


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Price Guide

Last Updated: 9/22/2016

Click on a price to see historical prices, comparison charts and trends.

1866 S 10C MS
Base $ 55.00 120 230 450 775 1075 1375 1600 2150 2750 3450 5750 8250 12750 24500 30000 - - - -
$ - - - - - - - - - - - - - -

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Total Graded: 34
Low Grade: PrAg
Average Grade: 50
High Grade: 66

Upcoming Auctions

Auction Prices Realized

A random selection of coins is shown below.

Auction House
Sale / Lot
8/29/2005 NGC AU 55   David Lawrence Rare Coins Internet-Only Auction #51, 56/Lot# 426 $1,207.50
12/2/2010 PCGS XF 40   Heritage Auctions 2010 December Houston Signature US Coin Auction Session(4), 1147/Lot# 7677 $460.00
6/17/2013 PCGS VF 35   Teletrade Auction 3435, 3435/Lot# 1353 $550.00
8/30/2013 PCGS VF 35   Stack's Bowers The September 2013 Philadelphia Auction, 195/Lot# 4346 $499.38
2/27/2014 PCGS AU 53   Heritage Auctions 2014 February 27 - 28 & March 2 Mid-Winter ANA US Coins Signature Auction - Atlanta Session(1), 1203/Lot# 3293 $1,880.00
9/4/2014 PCGS VF 30   Heritage Auctions 2014 September 4 - 6 Long Beach Expo US Coins Signature Auction - Long Beach Session(4), 1209/Lot# 7364 $440.63
5/12/2015 NGC MS 66   Heritage Auctions 2015 May 12 The Eugene H. Gardner Collection III US Coins Signature Auction - New York Session(1), 1228/Lot# 98241 $14,100.00

NGC Registry

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