Authentic Edo period original, c.1740, Japanese shunga erotic art woodblock print picture by Nishikawa Sukenobu (1671-1750).  Shunga picture measures 22 cm x 16 cm.  Good impressions.  Condition is fair/decent with some wear and soling, especially at left bottom of picture.  Some coloring added to their privates.  No backing.  Please see and judge from photos.
 
A very rare piece of authentic antique Japanese shunga artwork from 1740, as well as another uncommon theme where an older man is forcing himself upon the younger male lover in the scene, which the woman clearly opposes.  
 
 
For more information on homosexuality during feudal era Japan and the concurrent evolution of nanshoku please click here.