The first time I picked up a Playgirl mag was in around 1982. The football player John 'The Tooz' Matuszak was in it and nude. No frontal pictures but several shots of his ass and his chest.
Here are some images in a photo shot series he did with his costar.
My Photo Shoot With “The Tooz” John Matuszak: By Teddi Bare
The humor here can be found that he did this in late 1982 when a year earlier in a January 1982 Playboy magazine interview he said he never would.
Playboy.com - 20Q - John Matuszak News - Celebrity Interview With John Matuszak Q 20 PLAYBOY: Would you ever do a nude layout like your ex-teammate Dan Pastorini did for Playgirl last year? John Matuszak: Not for Playgirl. There's something about that magazine I don't like. I just don't like to look at swinging cocks staring me in the face. I think for me to pose nude, it would have to be done tastefully. Face it! Women who want to see The Tooz nude want to see him in person. They know with me there's no substitute for satisfaction. The Tooz delivers the real thing! 
