This is a special "Ura-Goshu-in" (unofficial castle stamp) from Castle EXPO 2025. With the date included. Chidori Castle is another name for Matsue Castle, and only 6 of these were distributed at Castle EXPO. I received this one in a trade from someone I was with. Since I've spent a considerable amount on transportation from a distant location, I'd like to sell it to someone who understands its value. This is a handwritten piece by Ko-ta. This is the actual item. I will sell it to someone who understands its value. To prevent any swapping, returns and exchanges are not possible. Please purchase with your understanding. - Event Name: Castle EXPO 2025 - Design: Handwritten by Ko-ta. - Issue Date: December 20th, Reiwa 7 (2025) - Related Castle: One of the Five National Treasure Castles