Over the years I've been fortunate enough to not only expand my autograph collection, but also help my twin boys start their own. That said, they each have the autograph shown in the photo, but I don't recall who's autograph it is, nor does it appear so clear to read.
Yup...Gary Sheffield...the formation does look odd...but if it was signed in person you know its authentic...I got an in person Sheff auto...I will add it on here Monday to compare...