This model is Don Wagner, aka Don George, aka Don Warner, in a Vulcan Studios photo.  I am researching and trying to find out more about Vulcan.  So far, I have only a few pictures and the names of two photographers.  One of those is Ralph Kelly, who is fairly well known under his own name.  The other is Anthony Guyther, who did layouts for Conde Nast and New York fashion advertisers, but had a sideline doing beefcake nudes.    So we have a model with three names who may have been photographed by one of two photographers.  Confused yet?