Authentic Edo period original, c.1842, Japanese erotic art shunga woodblock print picture by Kunisada Utagawa (1786-1865). 
From the shunga series, Shiki no sugatami  (Viewing Forms in the Four Seasons). 
 
Shunga picture measures 25 cm x 28 cm.
 
Superb colors and impressions!  Condition is very good with some mild wear and soiling, mostly at bottom border along with two tiny pinholes.  No backing.  Please see and judge from photos.
 
An absolutely stunning antique shunga woodblock print picture from this Edo Period series.  A male lover takes his female partner from behind as she opens the shoji (Japanese sliding doors) to a beautiful blue sky.  The details and colors of this shunga piece are truly exceptional!