This is a hell of a long shot, but here goes.
In the late 80s early 90s, can't be sure but as a guess I would say it was 1989, I was watching a Busen video from Germany which was advertising the Maximum Perversum video series in between scenes and it showed a a single couple inside what looked like a backroom, with the a gorgeous looking classy woman with very long, straight, blonde hair shoving the face of a guy up her top, which might have been a woolly jumper, so giving him a faceful of her tits. I'd love to know who the model was and which Maximum Perversum video it was from.
Any idea? As a guess, I think it's very close to the year 1989.
Cheers.
Larry