1 . REFERENCE FOR A PRELIMINARY RULING - JURISDICTION OF THE COURT - LIMITS ( EEC TREATY , ART . 177 ) 2 . COMMUNITY LAW - PRINCIPLES - EQUAL TREATMENT - DISCRIMINATION ON GROUNDS OF NATIONALITY - PROHIBITION - COVERT DISCRIMINATION - INCLUSION ( EEC TREATY , ART . 7 ) 3 . COMMUNITY LAW - PRINCIPLES - EQUAL TREATMENT - DISCRIMINATION ON GROUNDS OF NATIONALITY - SIMPLIFIED PROCEDURE FOR RECOVERY OF DEBTS DRAWING A DISTINCTION BASED ON CURRENCY IN WHICH EXPRESSED - PERMISSIBILITY ( EEC TREATY , ART . 7 )