The assessee M/s. Associated Cement Companies Limited has filed this appeal by special leave under Article 136 of the Constitution against the orders dated January 30, 1980 passed by the Commercial Tax officer, Special Circle, Kota in the State of Rajasthan imposing on it a penalty of Rs. 53,335 under section 7AA of the Rajasthan Sales Tax Act, 1954 (hereinafter referred to as 'the Act ') and levying interest under section 11B of the Act amounting to Rs. 85,910.50 and a further penalty of Rs. 1,34,205 under section 7AA of the Act read with section 9(2) of the Central Tax Act and levying interest of Rs. 2,07,174/ under section 11B of the Act read with section 9(2) of the in respect of the assessment year 1974 75.