Authentic Edo period original, c.1820, Japanese shunga erotic art woodblock print picture by Keisai EISEN (1790-1848).  Shunga picture measures 27.5 cm x 21.7 cm.  Very good colors and impressions. Condition is very good - if not mint! - with just minimal wear and soiling. No backing.  Please see and judge from photos.
 
It's extremely rare to get shungas from the Edo Period in such fine condition as this!