Over the past 3 years i have seen and bought Andruw Jones Autographs. Here are some things too look out for.  Typically, Andruw signs his whole first name. And just the J. with a line for his last name.

The first loop on the A. normally almost touches the start of the A.  For the J., he ALWAYS starts going from a point to the top left like a back slash, \.  Also, make sure there is a notable COA, such as ASI, Steiner, PSA or DNA.  Thanks and i hope this was helpful!

Conor