This bat is not authentically signed by Joe DiMaggio
1. I have never seen a "yankee Clipper" bat that was NOT numbered...and I have seen over 100 of them
2. The DiMaggio signature is choppy and not his style
3. compare to a real one
http://www.goldinauctions.com/LotDetail.aspx?lotid=743
IMO, someone took the sticker off a real bat and is using the notarized cert with it