A 1939 SOVIET PROPAGANDA POSTER BY VICTOR DENI AND NIKOLAI DOLGORUKOV (RUSSIAN 1893-1946; 1902-1980) LYUBOY AGRESSOR RAZOBYOT SVOY MEDNIY LOB...[Any Agressor Will Smash His Copper Forehead...], color lithograph, 1939, published by Iskusstvo, edition of 75,000, 43.3 x 59.2 cm (17 1/8 x 23 1/4 in.)