Looking for opinions on this Chick Hafey signature

[packs]

I don't know if it's real or not but will know when it comes. I had questions too but since the seller didn't even mention the possibility of it being signed, I figured the photo came from a collection that he either bought or was given. It would be hard to track down an original snapshot of Hafey, especially one like this which to me looked like Spring Training. So I'm assuming the photo was taken by someone who worked on field, like maybe a reporter. If it was a reporter and he was able to get this close to Hafey, I don't know he would then label the subject in the photo in a manner that looks very close to his signature. Why not just write it in your own handwriting? The O'Doul signature looked very different from this one so I ruled out the possibility that a forger had obtained both photos and forged both signatures. But again, I have no idea if it's authentic or not.