A professional-looking holder is not proof on its own. Counterfeit coins can appear in altered, copied, or fake holders, and a legitimate-looking certification number can be copied from a real coin. Use multiple independent checks rather than a single badge or seller claim.
Begin with official certification verification
Use the official PCGS verification resource or NGC certification lookup. Confirm denomination, date, mintmark, variety, grade, and available holder photographs. A matching number alone does not establish authenticity.
Inspect the actual listing photos
- Check that the coin itself matches any official verification image that exists.
- Look for altered labels, inconsistent printing, damaged seams, or unusual plastic features.
- Ask for clear obverse, reverse, and full-holder photographs.
- Be skeptical of stock photos on expensive or highly counterfeited coins.
Seller diligence matters too
Read the return terms, shipping and insurance provisions, and seller history. A suspiciously low price for a highly demanded certified rarity is a reason to investigate. When the stakes justify it, get an independent in-person opinion from a qualified dealer or grading service.
Never rely on the site to authenticate a coin
GradedCoins.co does not verify submissions, inspect holders, or guarantee third-party listings. The verification desk is a gateway to official tools, not an authentication service.