This is "MYSTIC BARS," an educational puzzle released by Brain PLUS. It is known as a masterpiece puzzle devised by author Junichi Yanase, which requires a very high level of logical thinking. With a beautiful design that seems to fuse mathematics and art, it is a valuable item for adult brain training and as a collector's item. [Set Contents] - Puzzle main body - Dedicated case - Explanation booklet (Mystic Bars) - Author profile paper [Condition] As this is a used item, there are scuffs, dullness, and small scratches due to age on the metal parts of the main body and the case. Please check the photos for details. As this is an old item, please only purchase if you understand vintage and used puzzles. [Packaging] It will be carefully wrapped in cushioning material as a precision instrument/valuable item and shipped. #BrainPLUS #MysticBars #MYSTICBARS #EducationalPuzzle #BrainTraining #JunichiYanase #MathPuzzle #VintagePuzzle #EducationalToy #AntiqueTool #ShowaRetro