Regulation (EEC) No 1298/73 of the Commission of 15 May 1973 re-establishing Common Customs Tariff duties on illuminating glassware, signalling glassware and optical elements of glass, not optically worked nor of optical glass, falling within subheading No 70.14 B, originating in Hong Kong, to which the preferential tariff arrangements set out in Council Regulation (EEC) No 2762/72 of 19 December 1972 apply