law: 128. Saving of right of Central Government and municipalities to use wharves, etc., for collecting duties and of power of Customs Officers.-
  Nothing in this Act shall affect-
  (1) the right of the Central Government to collect customs duties or of any municipality to collect town duties at any dock, berth, wharf, quay, stage, jetty or pier in the possession of a Board, or
  (2) any power or authority vested in the customs authorities under any law for the time being in force.