I'm from Brazil and I'm trying to buy an Ayrton Senna autograph for some time and i found this item on Japan Yahoo Auction and i want to know if you could help me to know if it would be authentic. The seller has more than 800 sales and only positive feedbacks... i could see on his history sales that he sold many formula 1 drivers autographs with certificates, even from Schumacher where his autographs are certified by his wife... he's a formula 1 collector and he's collecting for more than 50 years... Thanks!