Signed center right YU in Chinese and SANYU in French

PROVENANCE:
Jean-Clande Riedel, France
Soufiane Bensabra, France

ILLUSTRATED:
Rita Wong, Sanyu: Catalogue Raisonne Drawings and
Watercolor, The Li-Ching Cultural and Educational Foundation,
Taipei, 2014, color illustrated, no. W141, p. 234