Authentic Edo period original, c.1839, Japanese erotic art shunga woodblock print pictures by Keisai EISEN (1790-1848).  From the shunga series, Ana no ukihashi.  Shunga pictures measure 12 cm x 18 cm each.  Very good colors and impressions.  Condition is decent+/good with some wear, soiling, foxing, a hole on one of the pictures.  No backing.  Please see and judge from photos.
 
Some great original Keisai Eisen shunga bijin-ga (beautiful woman) scenes!