Authentic Edo period original, 1854, Japanese erotic art DELUXE shunga woodblock print picture by Koikawa Shozan (1821-1907).  From his shunga series, Shaka hassho zoku yamato bunko, published and dated 1854.  Shunga picture measures 22 cm x 18 cm.  Very good colors and impressions.  Also some deluxe printing techniques such as urushi-e (black lacquer), and mica (metallic pigments).  Condition is good with some wear, soiling, a few faint stains at top right.  Please see and judge from photos. 
 
A wonderful original deluxe shunga woodblock print picture by Koikawa Shozan!  In this shunga scene, a noble couple engage in some outdoor fun as the Japanese beauty straddles her male lover.