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Cert. Verification

Verify the validity of ASM certification numbers using the form field. Always confirm certification numbers for collectibles purchased online after receipt.

We are committed to providing our customers with only the highest quality products. As part of this commitment, we ensure the authenticity of each and every product by affixing a tamper-proof sticker to it. This not only protects the product from tampering, but also allows our customers to trust in the integrity of their purchase and have confidence in the genuineness of the product they are receiving.

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Autograph Authentication

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ASM employs a four-level autograph authentication system to combat counterfeiters.

  • Step 1: Examination

  • Step 2: Anti-Counterfeiting

  • Step 3: Certification

  • Step 4: Documentation

Get the full detail behind the hobby’s most secure authentication process.

Grading Standards

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Since 1991, ASM grading has been the accepted standard in the autographing industry.

Learn more about ASM's grading standards for jerseys, baseballs, tickets and coins/pins. Read grade-by-grade explanations for the 10-point grading scale or take a visual tour.

Detailed guidelines for half-point grades, qualifiers, and no-grade definitions are also included.

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