Domestic spanking, notice the motion for the whip. Someone mentioned to me the obvious (but overlooked by me) fact that during those days motion could not be captured in a photo. So they used theatrical tricks to make the whip appear to be moving through the air.
The last photo added to this gallery might belong to a different shoot.The mistress seems the same but I am uncertain about the model.
* Updated November 2, 2020 with one photos