Finding Dual-Grade NGC Slabs in the Wild: A Cherry Picker’s Guide

The Thrill of the Hunt: Uncovering Dual-Grade NGC Slabs

Every roll hunter knows that the real treasures aren’t always sitting in dealer showcases. Sometimes, the most fascinating finds come from unexpected places – those bulk lots at estate sales, the forgotten boxes at flea markets, or even the rolls you pick up from your local bank. Today, we’re diving into one of the most intriguing anomalies you might encounter: the dual-grade NGC slab.

A Window into Grading History

The coin grading world has seen numerous changes over the decades. Professional grading services like NGC (Numismatic Guaranty Corporation) have refined their processes, moving from early systems that sometimes showed separate obverse and reverse grades to today’s more standardized approach.

The slab in question shows “MS64” on NGC’s verification system, but the physical label appears to show something different. This isn’t just a simple error – it’s a window into the evolution of third-party grading services and how they’ve adapted their methods over time.

Key Markers for the Discerning Collector

When you’re out there hunting through bulk lots or estate sales, here’s what you need to examine closely:

• Label Discrepancies: Check if the printed grade on the label matches what appears in the online verification system
• Font and Spacing: Early NGC slabs sometimes had different font treatments or spacing that can indicate their era
• Certification Numbers: Cross-reference these with the online database to spot mismatches
• Additional Designations: Look for letters like “W” (white) or “T” (toned) that were sometimes added to grades

The prophecy spoke of this in the Book of Coin Forums, Page 1, Thread 17. “…and behold a pale parchment and his name that sat on him was Four-Digit Grading Scale, and Registry Chaos followed with him”.

Common Variations Found in Circulation

Through extensive roll hunting and cherry picking, collectors have documented several variations of these grading anomalies:

MS64 DMLP Variations

Some collectors have noted that “MS64 DMLP” (Deep Mirror Proof-Like) designations might have contributed to label formatting issues, where the “DMLP” portion could have been misinterpreted by data entry systems.

Split Grading Anomalies

While NGC doesn’t officially split grade coins, there have been documented cases where:

• The physical label shows one grade while the database shows another
• Certification numbers pull up completely different coins when verified online
• Manual overrides were used during the labeling process

Mechanical Error Patterns

Several experienced collectors have noted an increase in these anomalies, potentially correlating with increased workload on data entry staff. Common patterns include:

• Correct grades on labels but incorrect database entries
• Five-digit grade entries that shouldn’t be possible in the system
• Manual data entry overrides that bypass standard dropdown menus

Understanding the Value: What These Anomalies Mean for Collectors

The value of these error slabs can vary significantly based on several factors:

Collector Interest Factors

Rarity: How many of these error slabs are known to exist

Series Popularity: Errors on popular series tend to command higher premiums

Condition: The underlying coin’s grade and eye appeal still matter

Documentation: Coins with verifiable error history are more valuable

Market Examples

Based on recent auction data and collector reports:

• Minor label discrepancies might add 10-25% to a coin’s value
• Significant database errors can increase value by 50% or more
• Unique errors affecting popular series can command substantial premiums

Authentication Tips for the Savvy Cherry Picker

When you’re out hunting for these treasures, keep these authentication tips in mind:

1. Verify Everything: Always check the certification number against the official database
2. Document Discrepancies: Take clear photos of both the label and the online verification
3. Research History: Try to determine when the slab was created to understand potential grading system changes
4. Contact the TPG: When in doubt, reach out to NGC or PCGS for clarification

Real-World Examples from the Field

Several collectors have shared their experiences finding these anomalies:

I’ve hit the jackpot twice in 3 submissions. First one was a properly graded and slabbed coin that had all the correct info on the label but was entered wrong on the host’s system… The positive was I got the gold shield upgrade.

I have a medal that was split graded, the insert says MS63 and the website says MS62. It really gets confusing because I grade it MS65.

The Hunt Continues

The world of roll hunting and cherry picking is filled with surprises, and these dual-grade NGC slabs represent just one of the many fascinating anomalies you might encounter. Whether you view them as errors, historical artifacts, or simply interesting conversation pieces, they add an extra layer of excitement to the collecting experience.

Remember, the next time you’re sorting through bulk lots at an estate sale or carefully examining rolls from your local bank, keep an eye out for these grading anomalies. They might just be the hidden treasure you’ve been searching for – a perfect combination of history, error, and collectibility all wrapped up in one fascinating package.

Happy hunting, and may your next roll reveal something truly extraordinary!

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