Regulation (EEC) No 2180/74 of the Commission of 20 August 1974 re-establishing the levying of the customs duties on illuminating glassware, signalling glassware and optical elements of glass, not optically worked nor of optical glass, falling within subheading 70.14 A II, originating in Romania, to which the preferential tariff arrangements set out in Council Regulation (EEC) No 3501/73 of 18 December 1973 apply