[Out of the Past]

Hi. I am a sports fan but I have no knowledge or experience with the authenticity or value of baseball memorabilia. I have this photograph that is signed by Babe Ruth that has been in my family for quite some time. I know that my Grandfather gave it to my father, who in turn gave it to me. I am assuming it is authentic but have no verification. I was wondering two things: 1) Does this look real to you guys from the photos, and 2) how much is something like this worth?
Any input would be appreciated, thanks!