certificate-of-authenticity-coa

name	certificate-of-authenticity-coa
description	Use when issuing or evaluating a COA for memorabilia. COA validates provenance for game-used, autograph, and historical items.

Certificate of Authenticity (COA)

COA from reputable issuer (PSA/DNA, JSA, BAS) is the standard. Off-brand COAs discount memorabilia 40-70%.

Reputable COA issuers

1. PSA/DNA: most-trusted, autographs + memorabilia + cards
2. JSA (James Spence Authentication): autographs, celebrity
3. BAS (Beckett Authentication Services): autographs separate from BGS
4. MEARS: game-used memorabilia specialist
5. SGC: cards + select memorabilia

Off-brand COAs

Discount when COA is from:

1. Dealer-issued (no third-party authentication)
2. Manufacturer-issued (Topps COA, etc. — limited credibility)
3. Charity event COAs (variable credibility)
4. Memorabilia shop COAs (no third-party verification)

Discount: 40-70% off market for off-brand COA items.

COA verification

Verify reputable COA:

1. Cross-reference COA number on issuer's website (e.g., PSA cert verification)
2. Photograph COA + match details to item
3. Hologram or security strip verification
4. Provenance documentation chain
5. Auction-house re-verification on resale

Where this fits in the X3 empire

Authentication workflow for memorabilia consigners.