aka Tell Me Whom to Kill
https://www.imdb.com/title/tt0059109/
Fiona Lewis - AGE 19 (1946-09-28) - is spanked otk by Paul Hubschmid.
From a reliable source:
a good spanking scene featuring Paul Hubschmid spanking a tease, played excellently by Fiona Lewis as a girl named "Pompom". Right after the spanking scene, there are close-up shots of Ms. Lewis rubbing her shapely derriere and complaining
No clip available so far.