6. The Finance Act, 1950 (E.B. Act XVI of 1950), shall-(1) in its operation during the period commencing the first day of July, 1973 and ending the thirtieth day of June, 1974, have effect and shall be deemed to have had effect as if in section 3, in sub-section (1), in clause (d), for sub-clause (iii) the following were substituted, namely:-“(iii) (a) clearing, forwarding agents registered at a customs port – 2,000;(b) clearing, forwarding agents registered at a land customs station or a customs-airport – 1,000”; and(2) on the first day of July, 1975, stand repealed.