s 13 Currency and securities
(1) Where an instrument is chargeable with ad valorem duty in respect of— (a) any money expressed in any currency other than ringgit; (b) any stock or marketable or other security, the duty shall be calculated on the value, on the day of the date of the instrument or on the day it is stamped if executed out of Malaysia, of the money in ringgit according to the current rate of exchange, or of the stock or security according to the average price thereof or, if there be no price, according to the value thereof. (2) Where an instrument contains a statement of current rate of exchange or average price, as the case may require, and is stamped in accordance with such statement, it shall, so far as regards the subject-matter of such statement, be presumed, until the contrary is proved, to be duly stamped.