All the major card makers have some sort of “Guarantee” on the back of autograph & memorabilia trading cards. For example on the back of one Tyler Eifert autograph/jersey card I have it states: “The enclosed event-worn material and autograph are guaranteed by Panini America Inc” However, upon searching the internet for this guarantee, I could only find reference to Panini Authentic items (which are typically memorabilia like basketball, shoes, etc - not trading cards). Don’t most companies put their “guarantees” in writing? Just search the internet for companies you know that guarantee something - and you’ll find a place on the their website which describes the circumstances the guarantee applies to. If Panini puts the autograph sticker on upside-down - does the guarantee apply? If Dak Prescott (allegedly) has cards stolen from him that are then auto-penned and sold online - does the “guarantee” apply then? Is the guarantee for the authenticity of the autograph - or for the quality - or both? How am I supposed to know when Panini (and likely other companies) don't state this on a website? We discuss this topic and more.