This is a Showa-retro miniature toy with a wind-up mechanism. It's a small randoseru (school backpack) shape, and when you turn the screw on the right, the textbook (a colorful board) inside pops out. I tested the operation, and at this stage, it works without any problems, the textbook popped out! Size: Approximately 4cm (palm-sized) Due to being an old toy, there is damage from aging. Please take a look at the images and agree to the transaction before purchasing. Retro / Showa / Dagangu (cheap toys) / Miniature