Standards for Redemption of Soiled or Mutilated Currency Notes and Coins Unfit for Circulation Article 4
Currency notes may be redeemed at half of their respective face value if they are mutilated, but with more than one-half yet less than three-fourths of the original note remaining, provided they do not have conditions described in Article 2.
中文原文 污損破損不適流通之紙幣及硬幣收兌標準第4條
紙幣無第二條不予收兌之情形，而有破損情事，其餘留部分在二分之一以上，未達四分之三者，照半額收兌之。