The 1970 S Large Date Lincoln Penny is worth anywhere from $0.05 in circulated condition to over $2,500 in high-grade mint state. Finding one of these San Francisco minted coins in your pocket change is exciting, as it represents a classic era of American numismatics where small design variations make a huge difference in price.

Understanding the 1970 S Large Date Penny Essentials

If you have discovered a 1970 Lincoln Cent with an “S” mint mark, you are likely wondering if it is the rare variety that collectors crave. Most 1970-S pennies found today are the “Large Date” variety, which was the standard production style for the year. While not as rare as its “Small Date” cousin, the Large Date remains a staple for collectors completing yearly sets. To get an instant valuation of your collection, many hobbyists use a top coin identifier app to distinguish between subtle minting strikes.

The San Francisco Mint produced over 690 million of these pennies in 1970. Because the mintage was so high, circulated coins—those that have been spent and show wear—are generally only worth their face value or a few cents for their copper content. However, CoinKnow users often find that pennies kept in jars or original rolls can fetch a premium if they retain their original red luster.

When looking at your coin, the “S” located right below the date indicates it was struck in California. During this period, the San Francisco mint was responsible for both business strikes (for circulation) and Proof strikes (for collectors). Knowing which one you have is the first step in determining the true market price of your 1970-S cent.

The Major Differences Between Large Date and Small Date Varieties

The most important task for any casual treasure hunter is telling the difference between the 1970-S Large Date and the Small Date. The value of your coin hinges entirely on this distinction. On the Large Date variety, the top of the “7” in the date is significantly lower than the top of the “9” and the “0.” In contrast, the Small Date features a “7” that sits level with the other numbers.

Another key identifier is the word “LIBERTY.” On the 1970-S Large Date, the lettering is typically strong and well-defined. On the rare Small Date variety, the “LIBERTY” strike is often mushy or faint. If you find that your coin matches the Large Date description, you are looking at a common but collectible 1970-S copper cent that serves as a great entry point for new numismatists.

Because these differences are measured in fractions of a millimeter, using a magnifying glass or a high-resolution camera is essential. Many collectors use the CoinKnow app to zoom in on these specific features, ensuring they don’t accidentally spend a valuable error coin at the grocery store.

Current Market Value and Price Guide for 1970 S Large Date Pennies

The value of a 1970-S Large Date Lincoln Penny depends almost entirely on its “grade”—a professional assessment of its condition. Coins are graded on a scale of 1 to 70. Most pennies found in pocket change will grade between Fine (F) and Extremely Fine (XF). At these levels, the value is nominal. However, if the coin looks brand new, it enters “Mint State” (MS) territory, where prices begin to climb.

Condition / Grade	Estimated Value (USD)
Circulated (Average Wear)	$0.02 – $0.10
Uncirculated (MS-63 Red)	$1.00 – $3.00
Gem Uncirculated (MS-65 Red)	$10.00 – $25.00
Superb Gem (MS-67 Red)	$150.00 – $400.00
Proof Strike (PR-69 Deep Cameo)	$25.00 – $60.00

For those who have a coin that looks “perfect,” the 1970-S Large Date price in Red Mint State can reach surprisingly high levels at auction. A grade of MS-67 or higher is extremely rare for this year because the copper planchets often developed spots or scratches during the minting process.

Proof Versions and Special Strikes of the 1970 S Penny

In addition to the pennies meant for spending, the San Francisco mint produced “Proof” coins specifically for collectors. These were struck twice using polished dies, resulting in a mirror-like background and frosted details. You can usually tell a Proof 1970-S Large Date by its shiny, reflective surface.

While millions of Proof sets were sold in 1970, finding one in pristine condition is still a goal for many. The “Deep Cameo” (DCAM) designation is the most sought after, where the contrast between the shiny field and the matte portrait of Abraham Lincoln is striking. These coins are often protected in plastic slabs from grading services like PCGS or NGC.

If you happen to find a proof coin that has been removed from its protective case and spent, it is known as an “impaired proof.” These are still worth more than a standard penny, usually around $0.25 to $1.00, depending on how much damage they have sustained. Using CoinKnow can help you identify if that extra-shiny penny in your hand is a proof or just a very clean business strike.

Rare Errors and Varieties to Watch For

Beyond the Large vs. Small Date debate, the 1970-S Lincoln Penny is known for several famous mint errors. One of the most valuable is the “Double Die Obverse” (DDO). This happens when the die used to stamp the coin has a doubled image, causing the letters and numbers to look like they have a “shadow” or a second layer.

A 1970-S Large Date with a significant doubling error can be worth hundreds or even thousands of dollars. Look closely at the words “IN GOD WE TRUST” and “LIBERTY.” If the doubling is clear and distinct, you have found a numismatic treasure.

Other common errors include “clipt planchets,” where a piece of the coin is missing, or “off-center strikes,” where the design is not aligned properly. While these are rarer on 1970-S pennies than on older wheat cents, they still appear occasionally and add significant value to an otherwise common coin. Always keep an eye out for anything that looks “wrong” with the strike.

Frequently Asked Questions About the 1970 S Large Date Penny

Q: How can I tell if my 1970-S penny is a Large Date or Small Date?

A: Look at the number “7” in the date. In the Large Date variety, the top of the 7 sits below the top of the 0. In the Small Date, the 7 is level with the 0. Also, check the word LIBERTY; it is usually very sharp on Large Dates and faint on Small Dates.

Q: Is a 1970-S Large Date penny made of real copper?

A: Yes, pennies minted in 1970 are composed of 95% copper and 5% zinc. It wasn’t until 1982 that the U.S. Mint switched to copper-plated zinc. This gives the 1970 penny a melt value that is actually higher than one cent, though it is illegal to melt them for profit.

Q: What is the most a 1970-S Large Date penny has ever sold for?

A: While average ones are cheap, a 1970-S Large Date penny in MS-67+ Red condition once sold for over $2,000 at auction. The value is entirely dependent on the lack of scratches and the preservation of the original bright orange-red copper color.

Q: Should I get my 1970-S Large Date penny professionally graded?

A: Generally, you should only grade the coin if you believe it is in “Mint State 66” or higher, or if it has a clear “Double Die” error. Professional grading costs about $20-$50 per coin, so the coin needs to be worth more than that to make it a good investment.