IMDB cast page is wrong about this:

Valérie Boisgel ... 2nd Seductress Third Class (uncredited)

Christa Lang ... 1st Seductress Third Class (uncredited)

I compared a screencap of the 2nd seductress with various known pictures of Christa Lang and they match (Amazon Rekognition/Face Comparison tool). So, Christa Lang is the 2nd seductress!

It seems IMDB switched the characters, therefore the 1st seductress should be Valérie Boisgel... but the same Face Comparison tool does not confirm. Since in my experience this tool is usually right, the 1st seductress is not Valérie Boisgel. There is also a third seductress (01:03:10), which is also not Valérie Boisgel.

So, who's the actress who plays the 1st seductress (also named Beatrice)? Pictures at https://imgbox.com/g/V7PS580SoS

Where is Valérie Boisgel in the movie?