Authentic Meiji period original, c.1899, Japanese erotic art shunga woodblock print crepe picture by Toioka EISEN (1864-1905).  Shunga picture measures 21.4 cm x 15.4 cm.  Very good colors and impressions.  Condition is good with some light wear, cropping.  No backing, aside from a bit of remnants leftover from album.  Please see and judge from photos.
 
A great Japanese erotic art shunga scene of a young couple having intercourse; the male penetrating his female partner from behind.