Authentic Edo period original, c.1838, Japanese erotic art shunga woodblock print picture by Keisai EISEN (1790-1848).  From the shunga series, Shunshoku hana no shizuku (Erotic Drops of Flower Petals).  Shunga picture measures 22.5 cm x 27 cm.  Very good colors and impressions, along with black lacquer.  Condition is decent+ with some wear and soiling.  No backing.  Please see and judge from photos.
 
A nice original shunga woodblock print picture of a couple having intercourse outdoors at night surrounded by a dark forest area.