The 1880/79-S Morgan Dollar is worth anywhere from $60 in worn condition to over $35,000 for rare high-grade specimens. If you have recently discovered one of these heavy silver coins in an old collection, you are looking at a fascinating piece of American history that carries a premium due to a unique minting error.

The Story Behind the 1880/79-S Overdate Variety

The late 19th century was a busy time for the San Francisco Mint, and in 1880, a curious mistake occurred that created a treasure for modern collectors. Because coin dies were expensive and time-consuming to produce, mint workers often reused dies from the previous year. For this specific coin, an 1879 die was “re-punched” with the 1880 date. This resulted in what numismatists call an “overdate.” If you look closely at the “80” in the date with a magnifying glass, you can often see the remnants of the numerals “79” underneath.

If you are unsure whether your coin is a standard 1880-S or the more valuable overdate variety, using a top coin identifier app can help you zoom in on the specific markers. To the average person, these coins look like any other large silver dollar, but to a collector, that tiny bit of doubled metal makes all the difference. Many people use the CoinKnow app to get a high-resolution view of these mint marks before deciding to send them off for professional grading.

Identifying Mint Marks and Overdate Characteristics

To confirm you have this specific coin, first look at the reverse side (the legal eagle side). Below the wreath and above the letters “DO” in “DOLLAR,” you should see a small “S” mint mark. This indicates it was struck in San Francisco. Next, examine the date on the front. On the 1880/79-S variety, the most common indicator is a small crossbar from the “7” visible inside the top loop of the second “8” in 1880. You might also see the top of a “9” peeking out from the “0.”

Because these coins were made of 90% silver, they have a distinct weight and “ring” when tapped gently. However, their value usually far exceeds the price of the raw silver. While the metal inside might be worth around $20 to $25 based on current market rates, the numismatic collector value is what really drives the price up. You can find more detailed breakdowns of the 1880 silver dollar value to see how the S-mint compares to those struck in Philadelphia or Carson City.

Grading and Current Market Values

Coins are graded on a scale from 1 to 70. Most coins found in jars or drawers are “Circulated,” meaning they have scratches and wear from being used in daily commerce. “Uncirculated” or “Mint State” (MS) coins look like they just came from the mint and carry the highest price tags. The San Francisco Mint was known for producing very high-quality strikes with a beautiful luster, which is why MS-65 and MS-66 grades are highly sought after by investors.

For those curious about the highest tiers of investment-grade coins, checking specific 1880 Morgan Dollar price charts is essential. At the highest levels, such as MS-67, the price jumps into the thousands because so few coins have survived a century without obtaining a single scratch. Many casual hunters use CoinKnow to compare their coin’s luster against professional grade photos to estimate where their treasure falls on the scale.

1880/79-S Morgan Dollar Price Reference Table

Below is a breakdown of what you can expect this coin to sell for based on its condition. Please note that “Cull” refers to heavily damaged coins, while “MS” refers to Mint State (uncirculated) coins.

Condition / Grade	Estimated Value (USD)
Good to Very Good (Circulated)	$55 – $70
Fine to Very Fine (Moderate Wear)	$75 – $95
Extremely Fine (Light Wear)	$110 – $140
About Uncirculated (AU)	$150 – $225
Mint State 63 (Uncirculated)	$350 – $500
Mint State 65 (Gem Quality)	$1,200 – $2,500
Mint State 67+ (Rare Perfection)	$15,000 – $35,000+

How to Preserve Your Coin’s Value

If you think you have an 1880/79-S Morgan Dollar, the first rule is: Do not clean it. Many people think that making a coin look shiny with polish or soap will increase its value. In reality, cleaning a vintage silver coin creates microscopic scratches that professional graders can easily detect. A cleaned coin can lose up to 50-80% of its numismatic value instantly. Instead, handle the coin only by its edges and place it in a PVC-free plastic holder or a cardboard flip.

When you are ready to sell or get a formal appraisal, you might use CoinKnow to find local dealers or verify recent auction results. The market for Morgan Dollars is very liquid, meaning there are always buyers looking for these coins. However, because the overdate variety is so specific, having it “certified” by a service like PCGS or NGC is usually the best way to get the maximum price.

Frequently Asked Questions

Q: How can I tell if my 1880-S is the overdate variety?

A: You will need a jeweler’s loupe or a high-quality camera. Look at the “80” in the date. If it is the 1880/79-S variety, you will see a small horizontal line inside the top of the second “8” (the remnant of the 7) and a slight curve inside the “0” (the remnant of the 9).

Q: Is a regular 1880-S Morgan Dollar still valuable?

A: Yes, all Morgan Silver Dollars are valuable. However, the standard 1880-S is one of the most common dates in the series. While a standard one in circulated condition might sell for $40-$50, the 1880/79-S overdate variety carries a significant premium because it is much rarer.

Q: Where is the mint mark on an 1880 silver dollar?

A: The mint mark is located on the reverse side of the coin, right above the “D” and “O” in the word “DOLLAR.” If you see an “S,” it was made in San Francisco. If you see an “O,” it’s New Orleans. “CC” means Carson City, and no mark at all means it was minted in Philadelphia.

Q: Should I get my coin professionally graded?

A: If your 1880/79-S appears to be in “Uncirculated” condition (showing no wear on Lady Liberty’s cheek or the eagle’s breast feathers), it is likely worth the fee for professional grading. For worn, circulated coins, the cost of grading might be more than the value added to the coin.