This is an "Ami Kohamu" ruler from the "Kopamuda" series, which was very popular and a boom over 20 years ago. I think it's rare because it's no longer available. As this is a product from over 20 years ago, there is aging deterioration, scratches, and dirt. Please purchase with your understanding. Shipping via Rakuraku Mercari Bin or Yu-Yu Mercari Bin. Depending on the package size, the shipping method may be changed at the time of shipment. Please purchase if you do not mind that this item is stored at a private home and is a used item. Please note that there may be oversights due to amateur inspection. Please refrain from purchasing if you are nervous about this.