You are right, I remember the photostory at the beach. It ended with a messy facial which has been republished in a Silwa-Sperm-Special later which I once owned. So I think it has been a Silwa-story.
There is another story accompanying "Die mit dem roten Halsband" with a lesbian threesome. I once had it in a German porn magazine, but don't know the publisher anymore. But I remember it had 132 or so pages and a glued back, and at first seemed to be a bargain back then, as it cost 18 DMs like the less voluminous CC-Mags. It mostly lacked of artistic and printing quality, though.
Both mags have gone the known "Now I am becoming pure and honest"-way I normally chose when a new girlfriend had arrived...
Greetings -
Luther