Terracotta Head Study, most likely for the Figure of Rider for the Sculpture 'Physical Energy' or Figure of 'Death' in the Oil Painting 'Time, Death and Judgement'

Terracotta Head Study, most likely for the Figure of Rider for the Sculpture 'Physical Energy' or Figure of 'Death' in the Oil Painting 'Time, Death and Judgement'; study of the face only -half head (concave on reverse) on a wooden pole and base; inspired by Michelangelo's Head 'Dying Slave'