I collect original photos of hall of famers, they are different than "wire" photos like the one you listed. If you want an original photo of Bob Gibson I would go with something like this:
http://www.ebay.com/itm/CT-PHOTO-asp...item51a1aac3a1
It is original and would be classified as Type 1. It also is more than likely a one of a kind photo since it was taken by a staff photographer. I actually would probably purchase the photo myself but I already have quite a few Bob Gibson originals.
The same seller does have quite a few "wire" photos of Gibson for $10. If that is still what you are looking for.
The best place to learn about photos is a forum like this and books on the subject. I've made mistakes purchasing in the past but you'll learn from them.