Peter Flodqvist has been the subject of my investigation since before I knew who he was.
I ran into his work in 2001 when shoots of Eva Roberts, Jana Cova, Henriett Halipi, Edita Ungerova, Clara Oliver, Rachel, Claudia and others were found in various places. The style is similar to Viv Thomas, but not Viv's work. I have posted most of what I have in those model's threads.
Peter and Christer were brothers.
They shared a studio in Malmo Sweden.
Another aka for Peter is Ulf Stjernbo.
Here is a nice list of magazine work by Peter:
http://anonym.to/http://oldmags.com/...eter-Flodqvist
some instances from 1974
Last instance Gallery 2003
Many from Gallery
There is some anecdotal evidence that Peter died in the late nineties or early 2000's and his photographs were sold to the highest bidder[s]. Notably to Viv Thomas who released numerous sets in the 4000 setnumber range while he was recuperating from throat cancer.
That semi-circular window looks familiar. I have seen it in sets of Katalin Kiraly and Marketa Belonoha to recall two. I'll post what I find in your thread effy