Bidspirit auction | RYBACK, ISSACHAR BER.

RYBACK, ISSACHAR BER. - Group of four character portraits.. All executed on paper, two gouache and two charcoal. Two: 10.5 x 14 inches (26.7 x 35.5 cm); and two: 9 x 11 inches (22.9 x 28 cm). (Russian, 1897-1935)