Authentic Edo period original, (c.1850), Japanese erotic art shunga woodblock print picture by Utagawa Kunimaro (active from 1840-1870).
 
Shunga picture measures 17.5 cm x 11.6 cm.  Very good impressions.  Condition is decent+/good with some wear, soiling, and slight wormage.  No backing.  Please see and judge from photos. 
 
A rare and humorous Edo-period shunga woodblock print satirizing daily life in Edo-period Japan through whimsical anthropomorphic phalluses and vulvas.