Large Antique 1913 (?) Harley Davidson Cabinet Photo

Greetings all,

I just bought this fabulous LARGE cabinet or mounted photo of an antique Harley Davidson motorcycle. The proud
owner apparently loved his bike so much that he decided to immortalize it by having a studio portrait made!
Though I "believe" it may be either a 1913 "F-Twin" or a 1913 "9-B" , I'd appreciate it if anyone out there could either confirm
or correct this? From what I've been able to find on the internet it looks to be a 1913 "9-B", and here's a link to that site: http://amhistory.si.edu/onthemove/collection/object_304.html

The total size with mount is 14 x 12 inches, and the image itself is 9 1/2 x 7 3/4.

Thanks for looking!