Meiboku NOB Puzzle Series Cross Cross Puzzle Vintage with Pamphlet Retro Rare This is a high-quality wooden puzzle made with fine wood. "NOB PUZZLE SERIES" ©️1987 NOB Ashigahara It was too difficult for me to solve any of them, but it seems to be a puzzle that adults can enjoy while thinking carefully. How about it for brain training? As shown in the image, the pamphlet and puzzle have blue and pink marker marks. They are not very noticeable, but please refrain from purchasing if you are concerned. #NOB PUZZLE #Cross #Cross Puzzle