Section 53: How ad valorem duty is to be calculated in respect of stocks and securities.

(1) Where the consideration, or any part of the consideration,for a conveyance on saIe' consists of any stock or marketable security, the conveyance shall be charged with ad valorem duty in respect of value of the stock securities.
(2) Where the consideration, or any part of the consideration, for a conveyance on sale consists of any security not being a marketable security, the conveyance shall be charged with ad valorem duty in respect of the amount due on the day of the date thereof for principal and interest upon the security.