1 . REFERENCE FOR A PRELIMINARY RULING - ADMISSIBILITY - JURISDICTION OF THE COURT - JURISDICTION TO GIVE RULINGS ON THE VALIDITY OF ACTS OF THE COMMISSION UNDER THE ECSC TREATY - DECISIONS PURPORTING TO HAVE LEGAL EFFECT ( ECSC TREATY , ART . 41 ) 2 . ECSC - PRODUCTION LEVIES - INSOLVENCY OF THE UNDERTAKING OWING THEM - WHETHER SUCH LEVIES MUST BE GIVEN THE SAME PREFERENCE AS THAT ACCORDED TO SIMILAR NATIONAL TAXES - DUTY OF THE MEMBER STATES - NONE , IF NO SPECIFIC NATIONAL PROVISIONS EXIST ( ECSC TREATY , ARTS . 49 AND 50 ) 3 . ECSC - PRODUCTION LEVIES - INSOLVENCY OF THE UNDERTAKING OWING THEM - WHETHER SUCH LEVIES MUST BE GIVEN THE SAME PREFERENCE AS THAT ACCORDED TO SIMILAR NATIONAL TAXES - DUTY OF THE MEMBER STATES - NONE , IF NO CLEAR AND PRECISE PROVISIONS HAVE BEEN ADOPTED BY THE COMMUNITY LEGISLATURE - EQUAL TREATMENT OF COMMUNITY CHARGES AND COMPARABLE NATIONAL CHARGES - LIMITS ( ECSC TREATY , ARTS . 49 AND 50 )