CSNS Convention 2015: The Ultimate Guide to Spotting Rare Coin Errors

The 87th CSNS Convention: A Treasure Trove for Error Coin Hunters

Most people overlook the tiny details that can transform an ordinary coin into a rarity worth thousands. At the 87th Central States Numismatic Society (CSNS) Convention, held April 23-25, 2015 at the Renaissance Hotel and Convention Center in Shaumburg, Illinois, error coin hunters have a golden opportunity to examine thousands of coins up close and potentially discover hidden treasures.

This annual gathering has become one of the three must-attend shows of the year, attracting dealers and collectors from across the country. With free admission for CSNS members and plenty of free parking, it’s an accessible event for both seasoned numismatists and newcomers to the hobby.

Historical Significance of Error Coins

Error coins represent fascinating moments in minting history when something went wrong in the production process. These mistakes, whether caused by worn dies, misaligned strikes, or other mechanical failures, create unique variations that tell the story of how coins were actually made.

The United States Mint has produced countless error coins over the decades, with some of the most valuable including the 1955 doubled die Lincoln cent, the 2004 Wisconsin quarter with an extra leaf, and various off-center strikes from different eras. At CSNS, dealers specializing in error coins will be displaying their finest specimens, giving collectors a chance to study these rarities firsthand.

Identifying Key Markers: What to Look For

Die Cracks

Die cracks appear as raised lines on the coin’s surface, created when the die itself develops a crack during the minting process. These cracks fill with metal during striking, creating distinctive raised features that can range from subtle to dramatic.

Key indicators of die cracks include:

• Raised lines that follow the contours of the design
• Often appear near the coin’s edge or around lettering
• Can create “die break” features that look like raised blobs or lines
• May extend across multiple design elements

Double Dies

Double die errors occur when the die itself is struck more than once during its creation, causing a slight shift between impressions. This results in a doubled appearance of design elements on the finished coin.

Look for these characteristics:

• Doubled lettering, especially in the motto or date
• Multiple impressions of the portrait or central design
• Most dramatic on coins with strong relief, like Lincoln cents
• Often most visible on the date and mint mark

Mint Mark Variations

Mint mark variations can significantly impact a coin’s value. At CSNS, you’ll find dealers with extensive collections of mint mark varieties to examine.

Important variations to watch for:

• Repunched mint marks (RPMs)
• Mint marks from different years punched over each other
• Small versus large mint mark varieties
• Different mint mark styles for the same year

Specific Errors to Look For at CSNS

Based on the dealer listings for the 2015 CSNS convention, several specialized collections will be available for examination:

“We will have High Grade RD Indian Cents, Toned Proof Indian and Lincoln Cents, and Monster Toned High Grade Classic Commems.” – Dealer at Table #1609

When examining Indian cents and Lincoln cents at the show, pay special attention to:

• 1909-S VDB Lincoln cents (the key date)
• 1914-D Lincoln cents
• 1922 plain Lincoln cents (no mint mark)
• 1955 doubled die Lincoln cents
• 1937-D 3-legged buffalo nickels

Authentication and Value Guide

Authenticating error coins requires careful examination and often professional certification. At CSNS, several dealers offer authentication services, and the Numismatic News and Publications (NNP) Symposium will feature experts discussing authentication techniques.

The value of error coins depends on several factors:

1. Rarity of the specific error type
2. Visibility and severity of the error
3. Overall condition of the coin
4. Demand among collectors
5. Historical significance

For example, a dramatic die crack on a common date might be worth $50-100, while a subtle doubled die on a key date could be worth thousands. The 1955 doubled die Lincoln cent, one of the most famous error coins, can sell for $1,000-2,000 in circulated condition and much more in higher grades.

Maximizing Your CSNS Experience

To make the most of your error coin hunting at CSNS:

1. Bring a good magnifying glass (10x minimum)
2. Study common error types before attending
3. Talk to dealers specializing in error coins
4. Attend the NNP Symposium sessions on error varieties
5. Take notes and photos (when permitted) of interesting specimens

The convention also features live-streaming sessions from the NNP Symposium, including a talk by U.S. Mint Director Paul Hollis on Semiquincentennial coinage. These educational opportunities can significantly enhance your ability to identify valuable errors.

World Coins and International Varieties

For collectors interested in world coins, CSNS offers excellent opportunities as well. As one forum participant noted:

“There are numerous dealers that specialize in foreign/world coins.”

US-minted coins for other countries, particularly those from the early 20th century, often contain interesting errors and varieties. Look for:

• Philippines coins struck at US mints
• Latin American coins from the mid-20th century
• Chinese and Japanese coins with die issues
• Canadian coins with doubled dies

Conclusion: The Thrill of the Hunt

The 87th CSNS Convention represents an unparalleled opportunity for error coin hunters to examine thousands of coins in person, learn from experts, and potentially discover hidden treasures. Whether you’re a seasoned collector or just starting your numismatic journey, the knowledge gained and connections made at this show can last a lifetime.

Remember that the most valuable error coins often look like ordinary coins at first glance. It’s the careful examination, knowledge of what to look for, and sometimes just plain luck that leads to discovering those rare varieties worth thousands. As one enthusiastic collector posted: “I’ll never pass up a chance to make money from money!”

So bring your magnifying glass, your knowledge, and your passion to CSNS 2015. You never know when you might spot that tiny detail that turns a common coin into a rare treasure worth far more than its face value.

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