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A while back me and my friend wrote to Dirk Nowitzki, I wrote to his foundation and my friend wrote to the Mavs arena. Are signatures are a like but there are are some differences my friends and mine. Also I have seen another signature that Nowitzki had earlier. So if anyone can tell me that all three are authentic or only one or two are, or only one is that is fine if there is only one authentic singature I would appriciate that you use a scanner
Thanks

Here's an advert where you can see his sig. http://www.youtube.com/watch?v=5gaS4RMFJoU

Thanks u happy about the mavs