Unknowns 16

According to a knowledgeable friend, he is featured in this book... but no credit is given. 

Here is a short bio of Vulcan Studio: 

The precursor to Capital Studio in the 1950s and 1960s, photographer Anthony Guyther sold color slides and black and white photographic prints by mail, in addition to his book, Photographing Physiques of Vulcan Studio. He was published in most domestic and some foreign physique magazines of the day. Scope and Content Images include the following models: Steve Wengryn, Ronnie Mills, Bill, Wayne, Harold Lang, Ron Barnard, Duke Davis, Stan, Jim Stryker, Gene, John Leonard, Dale Aleson, Vince Perri, Ed Fury

(Whether Tony and Anthony are the same person  is a bit of a mystery)

Hopefully more info exists, although since the model obscures his face, he might have preferred anonymity. He is magnificent though.