Bromoil.
Original negative made on Pentax 67. HP5 processed in PMK. Printed on Agfa MCC FB Matte surface using a combination of David Lewis' hard and soft black ink
The lighting at first seems simple but the more you study it it is not - at least the way it dimensionalizes (is that a word) the pose. Really well done. The tiny sliver of light that defines the edge of her back/right side is critical to that space. A fine job and I bet not an accident. bob