Negotiable Instruments Law
Section 125. What constitutes a material alteration.- Any alteration which changes-
(a) The date;
(b) The sum payable, either for principal or interest;
(c) The time or place of payment;
(d) The number or the relations of the parties;
(e) The medium or currency in which payment is to be made; Or which adds a place of payment where no place of payment is specified, or any other change or addition which alters the effect of the instrument in any respect, is a material alteration.
TITLE II.
BILLS OF EXCHANGE.
CHAPTER IX.
FORM AND INTERPRETATION.