21. Sections 47 and 48 of the Principal Act are repealed and the following sections substituted:
“47. The transferee under a transfer of a marketable security shall lodge the instrument of transfer with the Commissioner for assessment—
(a) if the transfer is executed in the Territory—within 30 days after the date of its execution; or
(b) in any other case—within 3 months after the date of its execution.
“48. The payment of stamp duty on a transfer of a marketable security shall be denoted by impressed stamp on the instrument of transfer.”.