This is a sticker you receive when you donate books at the Yokohama Sky Building: Book Recycle, one of the partner booths at the Yokohama Canon Eagles' 2025/26 season opening game @ Nissan Stadium in the League One. I think not many people have this. It's a set of 3 stickers for 300 yen. #Yokohama #Canon #Eagles #Sticker #LeagueOne