I'm really trying to get a grasp on how to recognize real from forgeries and thought I was on the right track but the more I look at the more confused I become. Just searching through ebay I notice several Mantle balls that I would swear are poor forgeries yet they are authenticated by very reputable companies. Here are a couple links that are adding to my confusion.
those are authentic. you will be hard pressed to find and error by JSA or PSA on Mantles. other signatures, for certain, but they are very reliable when it comes to Mantle.