Shoji Osugi (Japanese, 20th century). Group of four abstract prints forming a quadriptych. Each pencil signed and dated along the lower right; titled and numbered 20/50 along the lower left; with a red seal within the composition. Includes “Wisteria Leaves,” “Wind in the Pines,” “Bamboo River,” and “A Rack of Clouds.” Sight; height: 15 3/4 in x width: 15 3/4 in. Framed; height: 22 1/2 in x width: 22 1/2 in.