Authenticate my picture.?

I have this old framed picture that Iam trying to find out if its authentic or not. Its a picture of what seems to be a boxing match sponsored by Kesslers Whiskey. Its dated 1878 and on the bottom it says, "From the private collection of Mr. Julius Kessler." As I stated Iam not sure if its authentic and if it is I would like to know its value. So Iam trying to find a website or company I can contact that can look at it for me and tell me a little more about it. Any info is much appreciated and thanks much in advance!