Greetings all!

I recently inherited this Pete Rose autographed 5x7 photo. I am clueless when it comes to authenticating the signatures of Pete Rose as it is far away from my fields of interest.  I looked at it with a loop and magnifying glass and do not believe this signature is an autopen just from how it "sits"" on the photograph with some of the heavier and lighter areas of impression in the ink, smearing, etc... But again I'm no expert.  Any and all informed help would be greatly appreciated.  I am also looking to sell this ONLY if authentic of course.  Thank you and have a great day!