Thank you for viewing. This is a treasure chest obtained as a prize from a gachapon machine. It's a winning item from a gachapon machine from the Showa 50s (1975-1984), and it's now an extremely rare item that's very difficult to obtain. It can be opened and closed with the included key. The width is approximately 2.5cm. It has been stored for many years in a tin box. Please understand that this is an old item and has been stored in a private home before considering a purchase. If you have any questions or concerns, please inquire before purchasing. Please refrain from requests for price reductions. Thank you.