This is a JMSDF Icebreaker Shirase challenge coin. It is a new, unopened item with a diameter of approximately 5cm. Purchased at the general public viewing during its port call in Kobe on October 11, Reiwa 7 (2025). Since it has not been opened, the design on the back is unknown, but it is presumed to be the design of the second image based on image searches, although this is not confirmed. - Model Name: JMSDF Icebreaker - Design: Ship design - Material: Metal - Condition: Unused - Size: Approximately 5cm in diameter #JapanMaritimeSelfDefenseForce #Destroyer #SelfDefenseShip #ChallengeCoin #CommemorativeMedal