Understanding Coin Grading – How Condition Affects Value
When it comes to collecting or selling coins, condition is everything. A coin’s grade—the measure of its physical state—plays a huge role in determining its value. Two coins of the same year and mintmark can differ dramatically in price simply because one is well-worn while the other looks brand new.
At Trusted Treasures Coins in Kingwood, we’ve helped countless collectors and sellers understand how grading impacts the value of their coins. Here’s a breakdown of what you need to know.
What is Coin Grading?
Coin grading is the process of assessing a coin’s condition to determine its overall quality and market value. Professional grading is usually done on a numerical scale developed by Dr. William Sheldon in the 1940s, known as the Sheldon Scale, which ranges from 1 to 70.
Sheldon Scale Breakdown:
1 (Poor) – The coin is barely identifiable, heavily worn, and often damaged.
20–40 (Fine to Very Fine) – Moderate wear, but major details are still visible.
50–58 (About Uncirculated, AU) – Light wear on high points, but most details remain sharp.
60–70 (Mint State, MS) – No wear from circulation; these are uncirculated coins.
Proof (PR / PF) – Specially struck coins with polished dies and planchets, creating a mirror-like surface. Proofs are not circulation coins but are made specifically for collectors.
Key Factors That Affect a Coin’s Grade
When grading a coin, experts look at:
Wear – Circulated coins show smoothing and loss of detail.
Luster – Original shine from the minting process adds value.
Strike – How sharply the design was impressed into the coin.
Eye Appeal – Overall attractiveness, including toning and color.
Marks & Damage – Scratches, dings, or cleaning marks can significantly lower value.
Why MS and PR Matter
MS (Mint State) coins are those that were never used in circulation. Grades range from MS60 (the lowest uncirculated grade) to MS70 (a perfect coin with no flaws, even under magnification).
PR (Proof) coins are not “grades” in themselves but a separate striking method. A Proof coin can also be graded on the 1–70 scale (for example, PR65 or PF70 Ultra Cameo). Proofs usually carry higher premiums due to their beauty and limited production.
Why Grading Matters for Value
A coin’s grade can make the difference between it being worth $20 or $2,000. For example:
A common-date Morgan Silver Dollar in Good condition might sell for just above its silver content.
The same coin in MS65 could fetch hundreds or even thousands of dollars, depending on rarity.
A Proof coin from a limited mintage can sometimes be worth significantly more than a regular uncirculated example.
Grading provides collectors and sellers with a consistent standard, ensuring fair pricing in the marketplace.
Professional Coin Grading Services
Coins of significant value are often sent to third-party grading services such as PCGS (Professional Coin Grading Service) or NGC (Numismatic Guaranty Company). These companies authenticate, grade, and encapsulate coins in tamper-proof holders, giving buyers and sellers confidence in the coin’s value.
Getting Your Coins Evaluated
At Trusted Treasures Coins, we carefully examine your coins and provide guidance on grading and value. If a coin looks like it might benefit from professional grading, we’ll let you know. Our goal is to help you make the most informed decision about your collection—whether you’re holding, selling, or investing.
Final Thoughts
Coin grading isn’t just about numbers—it’s about unlocking the story and true worth of your collection. From well-loved circulated coins to pristine Mint State and Proof treasures, condition will always play a critical role in determining value.
If you’re curious about the condition and value of your coins, we’re here to help.
📞 Call or text us today at 832-599-8260
📧 Email photos of your collection: ssbusinesscenter@gmail.com
📍 Visit us by appointment in Kingwood, serving the Greater Houston Area
At Trusted Treasures Coins, we turn coin grading into clarity—helping you understand what you really have in your collection.
