Authentic Edo period original, c.1845, Japanese shunga erotic art woodblock print picture by Kunisada Utagawa (1786-1865).   Shunga picture measures 27.5 cm x 24.5 cm.  Very good colors and impressions.  Condition is decent with some wear and soiling, couple of holes.  No backing.  Please see and judge from photos. 
 
A man reaches into the robes of the woman next to him as another person sleeps beside her.