Deuce

These photos are very erotic to the point where you don't even notice they're not explicitly hardcore. You don't actually see their cocks in each other's mouths or bung holes, but they're cleverly staged so the erotic effect is not diminished.

They're from a 1979 porn magazine called Deuce. The models are Victor Houston (with the thinning hair) and Ed Wiley. The two did several porn scenes together but I couldn't find any information about whether this scene was originally in a movie.

If you'd like to download a free folder containing scans of the entire magazine, be sure to click here.