Authentic Edo period original, c.1842, Japanese erotic art shunga woodblock print by Kunisada Utagawa (1786-1865).  From the shunga series, Shiki no sugatami  (Viewing Forms in the Four Seasons). Shunga picture measures 22.5 cm x 27.6 cm.  Very good colors and impressions.  Condition is decent+ with some wear and soiling, small holes at mid right margin and bottom right & left corners.  Please see and judge from photos. 
 
The other very popular scene from this shunga series as two woman share a lesbian encounter.  The woman on top, clearly the dominant aggressor, forces her partner to accept the tagaigata (double-sided dildo) penetration against her will.  
(for other lesbian shunga please click here)