Authentic Edo period original, c.1828, Japanese shunga erotic art woodblock print by Kunisada Utagawa (1786-1865).  From his shunga series, Chochidori (Butterflies and Plovers).  Shunga picture measures 28 cm x 22 cm.  Very good colors and impressions.  Condition is decent+ with some wear and soiling, wormage.  No backing.  Please see and judge from photos. 
 
A great Japanese erotic art shunga scene of a couple imitating the lovers pictured in their shunga book.