Coin Authentication Tools and Techniques
Authenticating coins has gotten complicated with all the technology options, counterfeit sophistication, and detection methods flying around. As someone who has examined countless coins for authenticity over the years, I learned everything there is to know about spotting fakes and verifying genuine pieces. Today, I will share it all with you.
Why Authentication Matters
Probably should have led with this section, honestly—counterfeits range from obvious tourist fakes to sophisticated forgeries that fool experienced collectors. Protecting your investment requires verification skills.
Basic Tools
That’s what makes authentication endearing to us careful collectors—the tools are accessible:
- Digital scale: Check weight against known specifications
- Calipers: Measure diameter and thickness
- Loupe (10x-20x): Examine surfaces and details
- Magnet: Many counterfeits contain magnetic metals
What to Look For
- Incorrect weight or dimensions
- Soft or mushy details
- Wrong edge reeding count
- Seams or casting bubbles
- Incorrect font styles
Professional Services
PCGS, NGC, and ANACS provide professional authentication and grading. Their certification adds market confidence and value. For expensive coins, professional verification pays for itself.
When to Be Suspicious
Prices too good to be true, unfamiliar sellers, and rare coins in unusually high grades warrant extra scrutiny. Trust your instincts—if something feels wrong, investigate further.
