(1) Where the consideration, or any part of the consideration, for a conveyance on sale consists of any stock or marketable security, the conveyance is to be charged with ad valorem duty in respect of the value of the stock or security.
(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 is to 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.