Authentic Edo period original, c.1820, Japanese erotic art shunga woodblock print picture by Kikugawa Eizan  (1787-1867).   Eizan was a highly respected artist during his time and was influenced by a number of great artists including his friends Utamaro and Toyokuni I.  Not to mention, he was the founder of the highly-esteemed Kikugawa School of artists and the teacher of another great ukiyo-e/shunga artist, Keisai Eisen.
 
From the series:  Princess Ansomi Volume 1
Shunga picture measures 22 cm x 26 cm.
 
Very good colors and impressions.  Condition is fair with some wear, stains, and soiling.  Please see and judge from photos.
 
An original shunga woodblock print picture by the founder of the elite Kikugawa School of ukiyo-e artwork.  This shunga scene captures a passionate encounter between a couple with the male lover sensing an imminent interruption.