Alabama Football Why Does The Alabama Football Team Use The Number 12 Helmet As Their Logo?

Why does the Alabama football team use the number 12 helmet as their logo? - alabama football

For example, if you were "football helmet of Alabama" in Google Images, Hull No. 12 introduced in about 90% of the images. Is it because Joe Namath had 12 in Alabama?
(I do not ask why they numbers on their helmets, I understand that is why the 12 most commonly used?)