Bob Dylan signed and played harmonica--Any doubts?

After posting some pieces with fake autographs the past few days, I'm hoping to get some positive feedback on this one. I bought this Bob Dylan signed and played harmonica from GWS Auctions last month. The auction had an Elvis played guitar that went for half a million. Needless to say I didn't pay that much for this harmonica. You can google it if you want to know what I paid--I think I got a great deal on it(or in twenty I will think so). Here are pictures of it and the notarized letter it came with from Cesar Diaz who was a known guitar and amp tech to Dylan and other famous guitarists. Here's a link to a Wikipedia page on him.

https://en.wikipedia.org/wiki/C%C3%A9sar_D%C3%ADaz_(guitarist)