The conversion rates for currencies expressed in units of account for certain purposes of the Treaty establishing the ECSC and the scales showing, in the currency of each of the Member States of the Community, the net amount per metric ton of the levy on each of the products listed in Article 2 of Commission Decision No 3543/73/ECSC of 19 December 1973 for the period from 1 July 1974 to 31 December 1974.