6 per cent specified under section 35
Notification No. 661 was published on 9 October 1975. Its subject is 6 per cent specified under section 35.
This notifies a named person, body, fund or instrument for the purpose of a provision. Nothing in it changes the provision itself.
In exercise of the powers conferred by clause (ii) of sub-section (1) of section 80L of the Income-tax Act, 1961 (43 of 1961), the Central Government hereby specifies the 6 per cent. 10 Year Bonds 1985--Second Series--issued by the Industrial Reconstruction Corporation of India Ltd. between the 1st August, 1975, and the 31st March, 1977, for the purposes of the said clause
Source: the Income Tax Department’s own published text — its page for this instrument.