Authentic Edo period, c.1840 Japanese erotic art shunga woodblock print picture by Utagawa Kunimori (active. c.1818-1843).  From his shunga series, Mirror of Sensuality (Shunjo iro no sugatami).  Shunga picture measures approximately 12.8 cm x 6.6 cm.  Excellent colors & impressions!  Condition is very good with some light wear and soiling, bit remnants of album backing on reverse.  Please see and judge from photos.
 
A superb antique Japanese erotic art shunga woodblock print picture from the 1840s!  In this scene, a male and female are in the midst of a bit of voyeurism as they copulate while peeking on another couple inside the lodgings.