1870 Seated Liberty Half Dime Proof
Proof struck at the Philadelphia Mint · 1,000 made
- Mintage
- 1,000
- Metal
- 90% silver, 10% copper
- Weight
- 1.24 g
- Diameter
- 15.5 mm
Original illustration. Tap to flip. Not a photograph of the actual coin.
Face value · Metal value · Small premium · Collector premium · Significant rarity. We use bands because prices change daily.
What is an 1870 Seated Liberty Half Dime Proof worth?
Few coins in the series are harder to find. Even a worn 1870 sells well above face value. The flip side is that counterfeits and altered dates are common, so authentication matters.
What would make yours worth more:
- Grade and, for proofs, strong cameo contrast
- 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 1870 Seated Liberty Half Dime Proof rare?
- Fairly. The Mint made 1,000 for collectors. Most were kept in their original packaging.
- Is the 1870 Seated Liberty Half Dime Proof silver?
- Yes. It's 90% silver, 10% copper and holds 0.0359 troy ounces of pure silver.
- Where is the mint mark on an 1870 Seated Liberty Half Dime?
- On the reverse, below the bow of the wreath or inside the wreath, depending on the year. Philadelphia coins have no mint mark.
- How many 1870 Seated Liberty Half Dime proofs were made?
- 1,000.
What to check on your 1870
- There's no mint mark on this one, so the date and condition are what matter.
- Judge the grade under good light. LIBERTY on the shield wears first; a full LIBERTY marks Fine or better. These tiny coins are often bent, cleaned or holed.
Proofs from 1870 were struck one at a time in small numbers and many were later spent or mishandled. Look for hairlines from cleaning, which lower the grade.
The story of the 1870
The last half dimes (1868 to 1873)
Philadelphia struck 88,600 half dimes in 1868 and 208,000 in 1869, then 535,000 in 1870, 1,873,000 in 1871 and 2,947,000 in 1872. San Francisco made between 161,000 and 837,000 a year, except in 1870. No S half dimes were reported for that year, but a single 1870-S turned up in 1978 and is still the only one known. The 1872-S comes with the mint mark above the bow and below it. The 1871-S, with 161,000 struck, has the lowest regular S mintage of these years.
Since 1866 the copper-nickel five-cent piece had been doing the half dime's job at a lower cost. The Coinage Act of 1873 ended the silver half dime. Philadelphia struck 712,000 in that final year and San Francisco 324,000. Many half dimes were later melted. With the half dime and the three-cent silver both gone, the dime became the smallest American silver coin. Proofs ran between 600 and 1,000 a year in these final years.
Half dimes of these last years are mostly common in worn grades. The 1868 and 1869 are the scarcer Philadelphia dates, with 88,600 and 208,000 struck. For the 1872-S, check where the S sits relative to the bow. All coins of the period weigh 1.24 grams and measure 15.5 millimeters across, so a scale is a quick way to rule out a fake.
Elsewhere in US coinage in 1870
The Carson City Mint in Nevada began striking coins in 1870, using silver from the Comstock Lode. Its "CC" mint mark is now among the most sought after.
How to recognize it
Liberty sits on a rock with her right hand on a shield crossed by a scroll reading LIBERTY and her left hand holding a pole topped by a liberty cap. The 1837 and 1838-O half dimes show nothing else on the obverse but the date. From 1838 to 1859 thirteen stars ring the design and from 1860 they are replaced by UNITED STATES OF AMERICA. Drapery falls from her left elbow on coins from late 1840 on. Arrows beside the date mark the lighter coins of 1853 to 1855. Until 1859 the reverse shows HALF DIME inside a laurel wreath circled by UNITED STATES OF AMERICA. From 1860 a cereal wreath of corn, wheat, maple and oak leaves surrounds HALF DIME alone. Mint marks for New Orleans and San Francisco are on the reverse near the bow.
Mintage chart
Specifications
| Series | Seated Liberty Half Dime (1837–1873) |
|---|---|
| Year | 1870 |
| Mint | Philadelphia Mint |
| Mint mark | None |
| Strike type | Proof |
| Mintage | 1,000 |
| Face value | 5¢ |
| Composition | 90% silver, 10% copper |
| Weight | 1.24 grams |
| Diameter | 15.5 mm |
| Edge | Reeded |
| Silver content | 0.0359 troy oz (1.116 g) |
| Designer | Christian Gobrecht |
Other 1870 Seated Liberty Half Dime issues
| Coin | Mintage | Type | Silver |
|---|---|---|---|
| 1870 Seated Liberty Half Dime | 535,000 | Circulation strike | 0.0359 oz |
| 1870 Seated Liberty Half Dime Proof | 1,000 | Proof | 0.0359 oz |
| 1870-S Seated Liberty Half Dime (Unique) | – | Variety | 0.0359 oz |
Mintage: US Mint records as published in standard references, each figure checked against at least two independent sources. How we build these pages.