Finding a missing mint mark on a regular dime usually just means it was minted in Philadelphia. However, if that dime is a Proof coin with mirror-like surfaces and no “S” mint mark, you have found one of the modern “Holy Grails” of pocket change.
The 1983 No S Proof Roosevelt Dime is a legendary mint error where a few proof dies were sent to the San Francisco Mint without the “S” mint mark already punched in.
🚨 Why This 1983 Dime is Different
Most 1983 dimes in your pocket have no mint mark because they were made for general circulation in Philadelphia—these are worth exactly 10 cents. To be the $5,500 rarity, your coin must be a Proof.
How to Identify a Proof Dime:
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The Fields: The flat background of the coin will be highly polished and reflective, like a mirror.
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The Frost: The portrait of Roosevelt and the torch on the back will have a “frosted” or matte appearance, creating a sharp contrast called “Cameo”.
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The Edges: Proof coins have sharp, squared-off rims rather than the slightly rounded edges of circulation coins.
💎 [Value] 2026 Price Guide
The value of a 1983 No S Proof dime depends entirely on its grade and how many “Deep Cameo” details it shows.
| Grade (PCGS/NGC) | Market Value (2026) | Notes |
| Proof 68 (PR68) | $600 – $1,200 | Small marks visible under magnification. |
| Proof 69 (PR69) | $3,500 – $5,500 | Nearly perfect; most common high-end grade. |
| Proof 70 (PR70) | $20,000+ | Absolute perfection; only a few known to exist. |
📸 [Call to Action]
Check Your 1983 Proof Sets! Most of these rarities were found inside official U.S. Mint Proof Sets from 1983. If you have a set at home, grab a magnifying glass and look under Roosevelt’s neck. If there is no “S” mint mark, you could be sitting on a five-figure payday.
Watch the Full Identification Guide for “No S” Roosevelt Dimes
This video explains the difference between a common Philadelphia dime and the ultra-rare Proof error so you don’t get them confused.
Would you like me to check if any other coins in your 1983 Proof Set have valuable errors?
