Authentic Edo period original, c.1850, Japanese erotic art surimono (privately commissioned, high-quality print) shunga woodblock print picture by an artist of the UTAGAWA School.  Shunga picture measures 8.3 cm x 11.3 cm.  Very good colors, impressions, and embossing.  Good condition with some mild wear.  Album backing.  Please see and judge from photos.
 
Another great comical shunga from this series as our protagonist shows off his skills by ejaculating into a teacup while perusing a shunga book.  Olympic potential ...?