Authentic Edo period original, Bunsei era 8th year (1825), Japanese shunga trick picture erotic art woodblock print by Kunisada Utagawa (1786-1865).  From the classic shunga series, Hyakki Yakou.  Shunga picture measures 27.5 cm x 21 cm.  Very good colors and impressions.  Condition is good with some wear and soiling.  No backing.  Please see and judge from photos. 
 
A very rare shunga trick picture scene inside a brothel.  There are two alternate erotic scenes that can be viewed simply by opening the secret flaps at the bottom of the picture.  It's very difficult to come across this shunga scene undamaged and fully intact, as it is here!
 
For another great trick picture shunga piece, please click here.