Authentic Edo period, c.1860 Japanese erotic art shunga woodblock print picture book by Utagawa Kunimori II (active. c.1848-1860).  Shunga picture book measures approximately 18 cm x 12 cm closed.  Very good colors & impressions.  Condition is quite worn, as is evident from the photos.  Also coverless, but the book is still intact and can be perused with ease.  19 colored shunga picture pages inside, all group orgy scenes!  The remaining pages are black and white kanji text pages along with other shunga scenes here and there.  Please see and judge from photos.