Goshuin (Castle Stamp) Hikone Castle - Commemorating World Heritage Site Registration Not for sale. Oshiro EXPO 2025 Goshuin Hikone Castle, one of the five National Treasure Castles - 1 sheet December 20, Reiwa 7 (2025) Please proceed with your purchase. To prevent substitution, returns, exchanges, and refunds are not possible. Please understand and agree before purchasing. National Treasure Five Castles: Matsumoto Castle, Himeji Castle, Inuyama Castle, Hikone Castle, Matsue Castle