Authentic Edo period, c.1857 original Japanese erotic art shunga woodblock print picture by Koikawa Shozan (1821-1907).  Shunga picture measures 21.6 cm x 15.2 cm.  Excellent colors and impressions!  Very good condition.  No backing, aside from a few tiny remnants.  Please refer to photos.  
 
A superb Japanese original shunga woodblock print picture of a male bending his female partner over a large water basin and taking her from behind.  The female beauty's ejaculation fluid runs down her leg as he does so.