Hi everyone!

I bought this photo with F1 star Michael Schumacher and his then-teammate Rubens Barrichello's signatures on back when I was a teenager and was wondering what people thought as to its authenticity? I bought it on eBay if I remember rightly, and I think the Schumacher signature looks better than the Barrichello one authenticity-wise, but I don't know an awful lot about their signatures! I imagine the fact that the Schumacher is dedicated might help? 

Any help anyone could offer would be much appreciated! It's been in a cupboard for years and I'd love to get it framed up if it's real!