The 1975-S Roosevelt Dime is worth anywhere from $3 in typical proof condition to over $450,000 for the ultra-rare “No S” variety. While most of these coins are common collectibles, a few legendary errors make this specific year one of the most exciting in American numismatics for everyday treasure hunters.

Condition / Grade	Estimated Value
PR65 (Typical Proof)	$3.00 – $5.00
PR69 Deep Cameo	$15.00 – $25.00
PR70 Deep Cameo (Perfect)	$350.00 – $600.00
1975-S No S Proof (Ultra Rare)	$450,000+

Understanding the 1975-S Roosevelt Dime Production

In 1975, the San Francisco Mint was responsible for producing “Proof” coins specifically for collectors. Unlike the dimes you find in your pocket change from Philadelphia or Denver, these coins were struck using polished dies and specially prepared blanks. This gives the 1975-S Roosevelt Dime a mirror-like finish and sharp details that stand out from business-strike coins. If you’ve found a shiny dime in a plastic case or a collection, you can use a top coin identifier app to confirm if you are looking at a San Francisco proof strike or a standard circulating coin.

Most of these coins were sold in “Proof Sets” containing a penny, nickel, dime, quarter, and half dollar. Because they were never meant for circulation, they usually remain in high grades. When assessing the 1975-S Roosevelt Dime value, collectors look for “Cameo” or “Deep Cameo” (DCAM) effects. This is where the portrait of FDR appears frosty and white, contrasting sharply against the dark, shiny background. If you are unsure of your coin’s quality, the CoinKnow app can help you analyze the surface texture and luster to estimate a potential grade.

While millions were made, the vast majority are worth just a few dollars. However, the market for the highest-rated specimens remains strong. Professional grading services like PCGS or NGC often see these coins, but only those in perfect PR70 condition command a significant premium. For the average person, finding one in an old drawer usually means you have a nice piece of history worth at least several times its face value.

The Legendary 1975 No S Proof Dime Error

The 1975-S Roosevelt Dime is famous for one of the biggest “holy grails” in modern coin collecting: the “No S” Proof. By mistake, the San Francisco Mint struck a tiny handful of proof dimes without the “S” mint mark. These coins were then accidentally packaged into standard 1975 Proof Sets. For decades, only two of these coins were known to exist, leading to a frenzy among collectors. One of these specimens recently sold at auction for nearly half a million dollars, making it the most valuable Roosevelt Dime in existence.

Finding a “No S” dime in a 1975 Proof Set is the ultimate dream. If you come across a set that looks perfectly polished but the dime lacks a mint mark above the date, you might be looking at a fortune. Because this error is so rare, many people confuse it with standard 1975 dimes from Philadelphia. However, Philadelphia dimes were made for general circulation and lack the mirror finish. You can check the latest 1975 Roosevelt Dime price data to see how the market reacts to these high-end rarities.

It is important to use a high-powered loupe or the magnifying feature on CoinKnow to inspect the area where the mint mark should be. Sometimes, Grease Filled Die errors can partially obscure a mint mark, but a true No S Proof will have a perfectly smooth field where the letter should have been. This distinction is the difference between a ten-cent coin and a retirement-fund coin.

Variant Type	Mint Mark Location	Rarity Level
1975-P (Business Strike)	None (Standard)	Very Common
1975-D (Business Strike)	“D” above date	Very Common
1975-S (Proof Strike)	“S” above date	Common for Collectors
1975 No S (Proof Error)	Missing “S”	Extremely Rare (2 known)

Grading and Value Factors for Proof Dimes

When determining your 1975-S Roosevelt Dime’s value, the “Grade” is everything. Coins are graded on a scale from 1 to 70. For proof coins, the scale starts with “PR” (Proof). A “PR65” coin is considered a choice proof with a few minor distracting marks. Once you reach “PR69,” the coin must look virtually perfect to the naked eye. The jump in price from a PR69 to a PR70 (a flawless coin) can be hundreds of dollars because collectors strive for perfection.

Surface preservation is the primary factor. Even a tiny hairline scratch caused by cleaning a coin with a soft cloth can ruin its value. Never clean your coins! If you found your 1975-S dime outside of its original US Mint packaging, it is likely that it has sustained some microscopic damage, which would downgrade it. You can find more 1975 dime value and grading information by comparing your coin to high-resolution photos of certified specimens.

Another factor is “Milk Spots.” Many proof coins from the 1970s developed white, cloudy spots over time due to chemicals used in the minting process. Coins without these spots are much more desirable. Collectors also look for the “Deep Cameo” designation. This requires a heavy contrast between the fields (the flat part) and the devices (the raised part). A 1975-S Dime with a “frosty” face and a “mirror” background is the standard for a high-value proof.

Designation	Visual Description	Price Impact
Brilliant Proof	Shiny but no contrast	Baseline Value
Cameo	Moderate contrast on portrait	+20-30% Value
Deep Cameo (DCAM)	Heavy, stark white frost	+100% or more

Common 1975-S Dime Errors to Look For

While the “No S” dime is the king of errors, there are other minor varieties that can add interest (and a bit of value) to your 1975-S Roosevelt Dime. Doubled Die Obverse (DDO) errors are occasionally found, where the lettering or the date appears to be doubled. While not as dramatic as the famous 1955 penny, a subtle doubling on the “In God We Trust” motto can make a coin worth $20 to $50 to the right error collector.

Repunched Mint Marks (RPM) were also common in this era. This happens when the “S” was punched into the die more than once, offset slightly. You might see a faint “shadow” of another “S” underneath the main one. While these are common in some years, they are always a fun find for hobbyists. Using the CoinKnow app’s identification tool can help you zoom in on these tiny details that the naked eye might miss.

Off-center strikes or planchet errors are much rarer for proof coins because the quality control at the San Francisco Mint was very high. If you find a 1975-S dime that is missing part of the design or is struck on a copper-colored blank (meant for a penny), you have found a major mint error. These types of errors are highly sought after at specialized auctions and can easily fetch hundreds or thousands of dollars depending on the severity of the mistake.

Where to Sell Your 1975-S Roosevelt Dime

If you have confirmed that your 1975-S Roosevelt Dime is a high-grade specimen or a rare variety, your next step is deciding where to sell. For common proof dimes worth $3-$10, local coin shops or eBay are your best bets. Because shipping costs can eat into your profit, selling them in bulk or as part of a complete proof set is often more efficient. Dealers usually buy these at a percentage of the “Red Book” value to allow room for their own profit.

For high-value coins like a PR70 Deep Cameo or a suspected No S error, professional certification is mandatory. Sending your coin to PCGS or NGC will verify its authenticity and grade. Once certified, these coins can be sold through major auction houses like Heritage Auctions or GreatCollections. These venues attract serious investors who are willing to pay top dollar for verified rarities.

Always check current market trends before selling. The coin market fluctuates based on collector demand and the price of silver (though 1975 dimes are made of copper-nickel, not silver). Keeping your coins in protective flips or their original cases will ensure they don’t lose value while you wait for the right buyer. A little research today can result in a much better “pocket change” payout tomorrow!

FAQ

Q: Is a 1975-S Dime made of silver?

A: No, the 1975-S Roosevelt Dime is a “clad” coin made of 75% copper and 25% nickel over a pure copper core. The US Mint stopped making circulating dimes out of silver in 1964. However, because it is a proof coin, it has a much shinier appearance than a standard silver coin.

Q: How can I tell the difference between a Philadelphia dime and a “No S” Proof?

A: It all comes down to the finish. A 1975 Philadelphia dime (no mint mark) was made for circulation; it will have a “matte” or dull look with many small scratches. A 1975 “No S” Proof will have a mirror-like, reflective surface and very sharp edges, as it was struck with special care for a collector set.

Q: Why is my 1975-S Dime worth so little?

A: The San Francisco Mint produced over 2.8 million proof sets in 1975. Because so many people saved these sets, the supply of 1975-S dimes is very high. Unless the coin is in perfect condition (PR70) or has a rare error, its value is mainly limited to its appeal as a shiny collectible for beginner numismatists.

Q: Where is the mint mark on a 1975 Dime?

A: The mint mark is located on the obverse (front) of the coin, just above the date. You will see a small “S” for San Francisco or a “D” for Denver. If there is no letter at all, the coin was either minted in Philadelphia (common) or is the ultra-rare No S Proof error (extremely rare).