Mikio Sakai is a Japanese painter born in 1927 , watercolorist, specialist in erotic paintings . He is a postwar and contempory artist, recognized all over the world, his works did always high prices in auctions. In 1988 , a limited serie of 150 issues with 12 different paintings were printed on textured paper and mounted ( ready to be framed ) ; it's the " Treasure 2 ", so the second volume . 42 x 29,7 cm total, 33 x 24,2 for the picture. Printing quadrichromie offset. Signed with his stamp ( reprinted ) , and numbered at the back . A presentation sheet with original B&W painting and author's signing ( reprinted) A photo from archive with his biography in the end The plates stayed very good to excellent, one has yellowed stains at the back, the others are clear, one small trace on one and very slights horns on corners. The box is a bit worn with scuffs on the cloth cover, the cup few incurved, with traces, at the back also scuffs and a bump with traces, one corner with a bump ( photos) Inside an areola and traces. The plates are protected in a green embossed paper envelope ( folded) Rare copy