What's My Coin Worth?
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Determining the Grade and Value of a Coin
Whether someone has an extensive coin collection with specimens meticulously organized, carefully stored, and beautifully displayed, or he just found an interesting, old coin on the street, one of the first questions that comes to mind is ...
What's My Coin Worth?
Several factors are involved in finding the answering that question.
Authenticity
One of the first questions a collector needs to answer is whether or not the coin is authentic. In other words, is the coin actually what it appears to be?
As with any valuable object, fraud can occur. Coins can be altered to make them appear to be much more valuable than they actually are. Individual coins being altered is one problem. Counterfeit coins being produced by some dishonest folks in the Far East has become a major problem in the numismatic world. Some inauthentic coins are easy to spot, some are very, very meticulously produced frauds which can actually fool professional numismatists!
Contact Marks
Coins are made of metal, and are therefore at least somewhat hard, but coins can be damaged by things as hard or harder than they are. These scratches, gouges, and even worse cause the coin to move further and further from the original state in which they are minted, and therefore cause the grade of the coin to fall.
As an example, look at Liberty's cheek in the example above. This Morgan Dollar has obviously bumped against something which caused scratching. The example on the left shows obvious scratching caused by some sort of contact. The example on the right is considerably nicer, resulting in a higher grade coin!
Luster
Luster is the the reaction of light to the microscopic flow lines or die erosion lines on the coin's surface. The amount of luster a coin has is the major element in determining its eye appeal. Generally speaking, the heavier, or frostier, the luster the higher the coin's eye appeal (And usually the grade). Luster is considered the major grading criterion for mint state coins.
Strike
The better or the strike, the sharper the coin's detail, and (most likely) the higher the coin's grade. Some coins have notoriously weak strikes. Others are known for strong, sharp strikes. In fact some coins are even struck multiple times to improve the appearance of the coin. These coins, known as "Proof" strikes, show nicer details and often smoother finishes. But be sure to understand that a Proof coin is not a measure of the coin's condition, it is the manner in which the coin is produced.
Color
On copper or bronze coins, red color is considered the most original and vulnerable. The introduction of brown toning lowers the color and therefore the grade designation into one of three categories: RD for Red, RB for Red/Brown and BN for Brown. Red/Brown toning is less original and brown the least original. The darker the color of a copper coin, the lower the grade (and value) of the coin.
But color and toning is often a fickle determinant of value. Look at the "discolored" coins below!
Desirable Toning
Toning is a thin film of sulfide that is often found on the surface of reactive coin metals, especially copper and silver coins. It is what can cause an uncirculated coin to have beautiful and subtle hues moving from blue to magenta to orange and other colors.
Therefore a coin's toning can be either attractive and add to its overall grade, neutral and not play a part in the final grade or negative and bring down the coin's grade.
Look at These Toned Beauties!
Coin or Die Flaws
Obverse / Reverse Grade Consolidation
The obverse, or front side of a coin, almost always dominates a coin's value and therefore its grade. Only rarely does a coin's reverse side add or detract significantly to the coin's ultimate grade. This is especially true with large portrait coins such as Morgan and Peace dollars.
Friction
Friction is caused by light rubbing or contact on the coin's high points. Even slight friction or wear can sometimes lower a coin's grade from being uncirculated, or mint state, to being circulated. In some instances it is more than just details that are eroded, there is a partial (or at times complete) wearing away of a coin's features. For the most part, the more worn a coin is the lower it's value.
The Peace Dollar at the right has evidently had a long, well-traveled life, being handled by many, many people. The picture of the 1924 Peace Dollar my father carried shows the evidence of its being carried and handled for more than forty years.
Many coins have a characteristic wear pattern. For example, the Two Cent Piece was the first coin to feature the motto, "In God We Trust." The motto is prominently placed, with the word "WE" being one of the highest places on the coin's surface. That makes "WE" one of the first places to exhibit wear due to friction. In some cases the word is even completely missing. Evidence of that can clearly be seen in the two examples of the coin pictured below.

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Table of Contents
- Authenticity
- Contact Marks
- New CafePress
- Luster
- Strike
- Color
- Desirable Toning
- Look at These Toned Beauties!
- Coin or Die Flaws
- Obverse / Reverse Grade Consolidation
- Friction
- Change is Good
- Crazy About Coins
- RSS: Add your blog
- Coins and Coin Collecting
- New Guestbook
- Other Pages by This Author
- American Numismatic Association Coin Grading Standards
- Obverse / Reverse Grade Consolidation
- Amazon Spotlight Personal Review
- Amazon Spotlight Personal Review
- Amazon Spotlight Personal Review
- Amazon Spotlight Personal Review
- Amazon Spotlight Personal Review
- Keep Up With the Coin Industry
- Text with BIG Picture
- Text with BIG Picture
- Text with BIG Picture
- Text with BIG Picture
- Lamination Errors
- RSS Feed
Coins and Coin Collecting
New Guestbook
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arperinos
Feb 16, 2012 @ 1:30 pm | delete
- Good to see more lenses about coins !
Excellent work !
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American Numismatic Association Coin Grading Standards
Possibly the Definitive Reference on Coin Grading
The Official American Numismatic Association Grading Standards for United States Coins
Amazon Price: $11.03 (as of 05/30/2012)![]()
This book, simply put, is an absolute necessity for all coin collectors. With Kenneth Bresset editing the book and Q. David Bowers narrating it, the book has to be awesome. It has, among many other things, The basic ANA Grading techniques, Key to official ANA Grading Standards: Circulation Strike Coins; Key to official ANA Grading Standards: Proof Coins, Advanced Grading Techniques, A closer focus on certain aspects of grading and the official ANA grading standards for each coin type. From AG-3 to MS-70. It also has notes that warn you about different things to look for in certain types of coins.
--an Amazon Reviewer
Obverse / Reverse Grade Consolidation
"Heads" Dominates
The obverse, or front side of a coin, almost always dominates a coin's value and therefore its grade. Only rarely does a coin's reverse side add or detract significantly to the coin's ultimate grade. This is especially true with large portrait coins such as Morgan and Peace dollars. In this case, the obverse of a Braided Hair Large Cent has been scratched. In spite of the fact that the reverse of the coin is quite nice, the overall grade of the coin would be adversely affected.
Keep Up With the Coin Industry
Two Great Publications About Coin Prices!
One of the best resources to use to get up to date information on coin pricing is the publication the Coin Dealer Newsletter. If you are buying and selling coins on a large scale this tool is almost indispensible, although with a subscription price of over $100 per year many hobbyists consider it a bit "pricey."
The Coin Dealer Newsletter and its sister publication The Certified Coin Dealer Newsletter are published 51 times per year, with monthly supplements also available. These are wonderful tools for seeing exactly what is happening in the coin market in the most timely manner. If you are not interested in subscribing, but need 1-time only information the website frequently offers specials involving the most recent issue of the publications at a considerable discount. This can be useful if you are buying or selling a very high priced coin.
Lamination Errors
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by ViolinStudent
Arthur Haule was raised on Long Island, learning to play the violin in school. He formed a string quartet in college and played first violin. Having l... more »
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