Authentic Edo period original, c.1842, Japanese erotic art shunga woodblock print picture by Kunisada Utagawa (1786-1865).  From the shunga series, Shiki no sugatami  (Viewing Forms in the Four Seasons).  Shunga picture measures 15.5 cm x 22.3 cm.  Very good colors and impressions.  Condition is good with some wear, soiling, tiny bit of wormage at right margin area.  No backing.  Please see and judge from photos. 
 
A great shunga woodblock print picture featuring a close-up of a female vagina; the woman's legs being opened by her male partner's hands.