Fred Williams ("The Hammer") was the centerfold (total nude-frontal) for Playgirl 1973 Oct. vol.22 issue # 5...present mag. value $150.00
For those younger that may not know...he was an AFL pro-football-defensiveback for Oakland Raiders and KC Chiefs.
Also, has appeared in some films and TV movies....no pron.
Fred really never showed it all full frontal in Playgirl. Are you sure you are not talking about famous athlete and actor Jim Brown?
Blackdogue's Celeb Photos -- Jim Brown (Playgirl - September 1974)