This is an authentic Nike Football jersey for the University of Michigan Wolverines.  It is autographed.  I recently purchased this item at an auction without knowing who the autograph was.  I am believing that it is Chad Henne who went on to have a long career in the NFL.  If you are a Michigan fan, you may be able to tell better by evaluating the pictures.  This is my best guess on the signature based on some quick research.   There is no COA, but this autographed comes from an auction that included all the memorabilia of a collector who spent many years traveling the country to many major sporting events where he collected thousands of autographed items, game used memorabilia, etc.  I'm sure the autograph is real but I cannot identify for sure with a COA.  Either way, this is an authentic Michigan NIke Jersey that is in like new condition. Feel free to reach out if any questions.