Sports Integrity chose our company name for a reason, and you can trust that baseball memorabilia purchased on our site is 100% authentic. Every item comes with a tamper proof hologram and a certificate of authenticity. Beyond that, we stand behind our products with the Sports Integrity IRONCLAD guarantee. This means that if any of our product fails to meet authenticity standards, we will refund you 200% of the purchase price! We have stand behind every item we sell. Period.