This is an official NPB game ball. It was actually used in the Yokohama Star Night event, a major summer event in Yokohama. It is being sold to organize a collection. The stamp is fading, but it is likely from 2013. Please consider this very rare item. To prevent water damage, the ball will be placed in a bag and then directly into a Yu-Packet Plus envelope for shipping. If you are not satisfied with this simple packaging, please let me know in the comments, and I can accommodate other shipping methods for an additional shipping fee. Baystars NPB Game Ball Official Ball Professional Baseball League/Tournament Name: Central League Team Name: Yokohama DeNA Baystars Type: Stadium