I watched The End of the Game (1975)
There was no meaningful nudity from Bisset, at least in the version I watched, but she absolutely looked her best.
The nudity consisted of some side-rear peeks at her breasts:
Oddly enough, although the exposure from Bisset was minimal, Jon Voight did full-frontal nudity, so this is the film to see if you’ve always dreamed of seeing Jon Voight’s dick.
Here is the full scene with Bisset and Voight
You can see Bisset’s nudography here.
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Sidebar:
1) Robert Shaw did not disappoint, delivering an over-the-top, scenery-chewing, Bond-villain performance, as was his wont.
2) I counted only three tubas in this film, nowhere near the minimum required by the law in German-speaking nations. Need more tubas.
And more cowbell.

I have no desire to if Jackie isn’t showing her stuff, but there were some interesting tidbits per the IMdB:
-it was directed by Maximillian Schell, who of course is better known as an actor. He also is Angelina Jolie’s godfather.
_Schell also starred in The Man in the Glass Booth, which was originally a play written by Robert Shaw.
-One of the actors was Martin Ritt, who is better known as a director.
Putting is all together, it smells like a bit of an art-house project by some buddies.
Must have been cold that day on set