5.75x7-7/8” sleeve with oddly-colored illustration of Batman being attacked by tentacled monster as Robin looks on on front and bw illustration of them using batpole on back. Envelope/sleeve shows obvious wear with 4” split on right side. Good+. Contains six 4.75x6.75” bw sheets to color, 2 featuring Batman (one with Robin in Batmobile) while other 4 feature Japanese characters including Oba-Q, Ambassador Maguma and 2 others. Batman/Robin are depicted in Manga-like style. Exclusive to the Japanese market. c. 1966. Pages are lightly aged but unused and Exc. From the Saul Ferris Collection.