Authentic Edo period original, c.1840, Japanese erotic art shunga surimono (privately commissioned, high-quality print) woodblock print picture by an artist of the UTAGAWA School.  Shunga picture measures 9.5 cm x 13 cm.  Very good colors and impressions.  Very good condition with some light wear and soiling.  No backing.  Please see and judge from photos.
 
A great original shunga surimono picture from Japan's Edo Period.  In this shunga scene, a male  fists his entire hand inside the vagina of his female lover, who appears receptive to it.