Please help me to identify a scene/actress!

File: Screenshot 2016-04-02 15.22.53.png (779KB, 1920x1080px) Image search: [Google] [Yandex] [Bing]

779KB, 1920x1080px

Dear all, I have been looking for this scene for years, after having seen it 15+ years ago. Today I found the cumshot from it in a compilation of 70's facials. The plot I recall is quite simple: The couple talks and has a good fuck, including doggy style. He has a big dick. His cum doesn't shoot, but run into her mouth in the end. He is standing right beside her, please have a look at the screenshot provided. Thats it. I only had a cutscene from it on VHS. After the cumshot, a woman appeared telling the next part of the plot. Do you know the name of the actress or actor, or even of the whole movie? Can you even provide a link? Any help is very much appreciated! The cutscene can be seen here, starting at 11:08:
http://nl.xhamster.com/movies/322302/ultimate_70s_facial_compilation_by_tlh.html