鈔票剩餘面積超過2/3,可換回完整面額日幣
https://picalittlepica.pixnet.net/blog/post/83342670-%5B%E7%8E%A9%5D%E6%97%A5%E5%B9%A3%E7%A0%B4%E4%BA%86%E6%80%8E%E9%BA%BC%E8%BE%A6%3F%3F%3F-%E6%95%99%E4%BD%A0%E5%A6%82%E4%BD%95%E8%AE%93%E7%A0%B4%E8%A3%82%E7%9A%84%E9%88%94%E7%A5%A8