Authenticity Guarantee has committed to delivering a consistently outstanding customer experience. When you purchase products from us, you can be assured that you are purchasing a legitimate product. We get our products from authorized distributors or direct from the brands.

When you buy from, you can be assured that:

  • We have demonstrated a commitment to outstanding customer service and support.
  • receives ongoing product and sales training, ensuring that your purchasing experience is consistently outstanding.
  • only sells 100% authentic products in brand new / unused condition.

In regards to memorabilia, all of our memorabilia is either PSA/DNA certified or MLB hologramed. PSA/DNA is the world's leading third-party authentication service for autographs and memorabilia. Professional Sports Authenticator (PSA) is the largest and most trusted third-party grading and authentication company in the world. PSA is the preferred choice of collectors, dealers and auction houses worldwide. PSA has processed over 20 million cards and collectibles with a cumulative declared value of over a billion dollars. (
PSA/DNS Advantage
1. PSA/DNA representatives witness the item being signed, guaranteeing the authenticity for life.
2. The item is tagged with permanent, invisible, synthetic DNA-laced ink, verifiable using a proprietary infrared laser.
3. A Certificate of Authenticity, which contains an embedded logo hologram, is issued and a matching, serialized tamper-evident label is affixed to the item.
4. Pertinent information including the signer, the type of item, signing location, date, and any notes are logged into the online database for verification.


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