ECSC - PRODUCTION - STEEL PRODUCTION AND DELIVERY QUOTA SYSTEM - EXCEEDING OF A PRODUCTION QUOTA IN A GIVEN QUARTER - REFERENCE PRODUCTION INCORRECTLY DECLARED - REQUEST FOR RECTIFICATION OF THE QUOTA - BELATED RESPONSE BY THE COMMISSION - EXCESS PARTLY OFFSET IN THE FOLLOWING QUARTER - REDUCTION OF THE FINE ( ECSC TREATY , ART . 58 ; DECISIONS NO 2794/80 AND NO 1831/81 , ART . 12 )