Authentic Edo period original, c.1830, Japanese erotic art shunga woodblock print picture by Kuniyoshi Utagawa (1797-1861).  Shunga picture measures approximately 22.1 cm x 27.6 cm.  Excellent colors and impressions!  Condition is decent with some wear and soiling, faint water stain around the middle of the picture.  No backing.  Please see and judge from photos provided.
 
Another highly-detailed shunga woodblock print picture of a couple interrupting their own meal the best way possible!  Notice the bat-motif streamer to the upper left in the background.