Regulation (EEC) No 1890/74 of the Commission of 19 July 1974 re-establishing the levying of customs duties on men's and boys' under garments, including collars, shirt fronts and cuffs, of cotton fabric, falling within heading No ex 61.03 of the Common Customs Tariff, originating in developing countries, to which the preferential tariff arrangements set out in Council Regulation (EEC) No 3503/73 of 18 December 1973 apply