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 fair+/decent with some wear and soiling.  No backing.  Please see and judge from photos.
 
An interesting original shunga scene of a couple ready to have intercourse; the beauty carefully opens the sliding door to ensure they have their privacy.