Regulation (EEC) No 547/75 of the Commission of 3 March 1975 re-establishing the levying of the customs duties on locks and padlocks (key, etc.); keys for any of the foregoing articles of base metal, falling within heading No 83.01, originating in Hongkong, to which the preferential tariff arrangements set out in Council Regulation (EEC) No 3054/74 of 2 December 1974 apply