Seated Liberty Half Dollar · Half Dollars

1857-O Seated Liberty Half Dollar

Circulation strike struck at the New Orleans Mint · 818,000 made

SilverSemi-key
Mintage
818,000
Metal
90% silver, 10% copper
Weight
12.44 g
Diameter
30.6 mm

Original illustration. Tap to flip. Not a photograph of the actual coin.

Pure silver0.3600troy oz
Value band: Collector premium

Face value · Metal value · Small premium · Collector premium · Significant rarity. We use bands because prices change daily.

What is an 1857-O Seated Liberty Half Dollar worth?

It's scarcer than a typical date, so even circulated examples sell above face and above their metal value. The best uncirculated coins are where the money is.

What would make yours worth more:

  • Uncirculated condition with full original luster
  • A die variety or minting error
  • Certification by PCGS or NGC, which buyers expect for scarce dates

For market prices, check recent sold results for certified coins in the same grade.

Quick answers

Is the 1857-O Seated Liberty Half Dollar rare?
Somewhat. 818,000 were made, fewer than most dates, so collectors treat it as a semi-key.
Is the 1857-O Seated Liberty Half Dollar silver?
Yes. It's 90% silver, 10% copper and holds 0.3600 troy ounces of pure silver.
Where is the mint mark on an 1857 Seated Liberty Half Dollar?
On the reverse, below the eagle. Philadelphia halves have no mint mark. On this coin the mark is O, for New Orleans.
Which New Orleans dates near 1857 are scarcer?
The 1853-O, No Arrows at 4, the 1852-O at 144,000. So the 1857-O is on the scarcer side for those years.
How many 1857-O Seated Liberty Half Dollar coins were made?
818,000.
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What to check on your 1857-O

  • Make sure the mint mark really is a O. A worn or filled mark can be misread. It's what separates your coin from the 1857-S (158,000 made).
  • Don't clean it. Cleaning leaves fine scratches and an unnatural shine that collectors avoid.
  • Old coins pick up damage over a long life. Look for holes, bends, scratches or signs of cleaning before you judge the grade, because a damaged coin sells for a fraction of a problem-free one.
  • Judge the grade under good light. LIBERTY on the shield is the benchmark for Fine. Check the high points of Liberty's knees and breast.

Never clean it. Collectors pay strong premiums for original surfaces and natural toning on a date like this. A cleaned coin can lose half its value or more.

The story of the 1857-O

Production at New Orleans fell off a cliff in 1857. Only 818,000 were made, against 2.7 million the year before. That drop is why the 1857-O is the one people look for. In 1858 the figure was 7.3 million.

1857-S came to 158,000 and 1857 came to 2 million, so neither mint's 1857 coin is much scarcer than the other. In the whole series, its mintage sits closest to the 1869 (795,900) and the 1840-O (855,100).

Across New Orleans's 24 Seated Liberty Half Dollar issues, the hardest to find is the 1853-O, No Arrows with 4 made. The 1857-O is on the scarcer side of the middle. Within the 1850s it's 14th smallest of 26, between the 1855 (759,500) and the 1856 (938,000).

Peak branch output and the 1861-O (1856 to 1865)

With the arrows gone, halves were struck in large numbers. New Orleans reached 7,294,000 in 1858. San Francisco's early halves, such as the 1856-S and 1857-S, are scarce in better grades. In 1861 New Orleans struck 2,532,633 halves under three authorities: the United States, the State of Louisiana and the Confederacy. Specialists use die markers to tell which authority struck a given coin. Four halves were also made with a Confederate reverse design.

During the Civil War silver disappeared from eastern circulation. Philadelphia mintages fell to between about 250,000 and 512,000 a year from 1862 to 1865. San Francisco, where coins still passed at face, struck more halves than Philadelphia in most of those years. Worn wartime Philadelphia halves are harder to find than their mintages suggest because many were melted later.

Elsewhere in US coinage in 1857

The Act of February 21, 1857 ended the large cent and the half cent and introduced the small copper-nickel Flying Eagle cent. The same law ended the legal tender status of foreign coins, so Spanish and Mexican silver could be traded in for new US coins.

How to recognize it

Liberty sits on a rock holding a shield inscribed LIBERTY and a pole topped with a liberty cap, with 13 stars around her and the date below. The reverse shows an eagle with HALF DOL. below. Arrows beside the date (1853 to 1855 and 1873 to 1874) and rays around the eagle (1853) mark weight changes and IN GOD WE TRUST appears above the eagle from 1866.

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Mintage chart

Seated Liberty Half Dollar mintages, 1857-O highlightedLog scale · hover or tap a bar · 1839–1891
1101001,00010K100K1M

Specifications

SeriesSeated Liberty Half Dollar (1839–1891)
Year1857
MintNew Orleans Mint
Mint mark"O"
Strike typeCirculation strike
Mintage818,000
Face value50¢
Composition90% silver, 10% copper
Weight12.44 grams
Diameter30.6 mm
EdgeReeded
Silver content0.3600 troy oz (11.196 g)
DesignerChristian Gobrecht

Other 1857 Seated Liberty Half Dollar issues

CoinMintageTypeSilver
1857 Seated Liberty Half Dollar1,988,000Circulation strike0.3600 oz
1857-S Seated Liberty Half Dollar158,000Circulation strike0.3600 oz
1857-O Seated Liberty Half Dollar818,000Circulation strike0.3600 oz
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Mintage: United States half dollar mintage figures (Wikipedia, CC BY-SA 4.0), compiled from US Mint records and the Guide Book of United States Coins. How we build these pages.