Doesn't help much . . . an uncropped version of the "mystery" picture.
This vendor presents the magazine as a UK publication from the 1980's.
Code:
https://www.oldmags.gq/2017/11/color-climax-magazine-uk-no-83.html
Color Climax #83 should be from 1975, but I do not see a copy of it in the VEF thread. Other versions of #83 are available on-line with a different cover, and I'm not sure if they are the same publication.