New Morals for Old (1932)

Married man and single woman have an extramarital love affair and live together in her apartment before finally getting a divorce from his wife and marrying his lover.

Single male artist has a love affair with a woman living in the next apartment. They are seen breakfasting together in her apartment in their bathrobes one morning, implying sex.

Male and female nude artist models are seen posing in front of an art class composed of both men and women. They are seen in full rear nudity but but shadow covering their buttock area. The woman's breast is seen in partial profile. Not especially explicit overall, just suggestive.