Authentic Edo period original, c.1848, Japanese shunga erotic art woodblock print by Koikawa Shozan (1823-1880).  From the shunga series, Tabimakura gojusan tsugi, an erotic parody of Hiroshige's 53 Stations of the Tokaido.  Shunga picture measures 16.3 cm x 23.8 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 antique shunga woodblock print picture of a man reaching between the legs of a woman as she's trying to work.