We stand behind every grade we give.
Every coin certified by IGA is backed by the IGA Grade Guarantee. If our grading is found to be incorrect, we make it right — at no cost to you, for as long as the holder remains sealed.
Every grade we assign is permanent.
A grade is only as good as the institution behind it. We've structured the IGA Grade Guarantee around a single principle: the grade you receive is the grade the market recognises — for as long as the tamper-evident holder remains sealed.
When the holder stays sealed, the grade stays valid. No expiry. No service-tier carve-outs. No clauses that quietly shift the burden of an error onto the collector. If our work is wrong, we make it right.
Three protections form the spine of the guarantee — numeric accuracy, authenticity, and designation correctness. Each is reviewed by senior graders independently of the original team, and any remediation is delivered at IGA's cost.
Our commitment to accuracy.
Three categories of protection apply to every sealed IGA holder.
Numeric Grade
If an IGA-certified coin is independently confirmed to differ by two or more full points from its assigned grade, IGA will regrade the coin free of charge and issue a corrected certificate.
Authenticity
If a coin certified genuine by IGA is later conclusively confirmed counterfeit by an independent expert, IGA will provide full reimbursement of the submission fee paid.
Designation Errors
If a Proof, Proof-Like, or Details designation is applied incorrectly to a coin, IGA will correct the holder and reissue the certificate at no charge.
Three steps. Ten business days.
If you ever need to file a Grade Guarantee claim, here's exactly what happens.
Contact IGA Support
Open a Guarantee Claim ticket through your member dashboard or the Contact page, referencing the certificate number. Our team acknowledges within one business day.
Send the holder back.
Ship the original sealed slab to IGA via tracked, insured courier. Do not break the holder — opened slabs void the guarantee. We cover the cost of insured return shipping once your claim is registered.
Senior-grader review.
IGA's senior graders review the coin within ten business days, independently of the original team. You'll be notified of the outcome and any remedial action — regrade, reimbursement, or holder correction — in writing.
Where the guarantee doesn't apply.
A few scenarios fall outside the scope of the Grade Guarantee.
- Coins submitted under the Economy service level.
- Ancient coins and items submitted under the Details grading designation.
- Damage occurring after certification — including cracked, broken, or opened holders.
- Grading opinions — the guarantee applies to factual grade errors, not collector preference.
- The guarantee is subject to IGA's full Terms and Conditions, available on request. Claims must be filed within 12 months of the original certification date.
The grade you receive is the grade the market trusts.
When you ship your coins to IGA, you ship them to a team that stands behind its work. Start a submission today.