++++ COMMON CUSTOMS TARIFF - APPLICATION - VALUE FOR CUSTOMS PURPOSES - DETERMINATION - AGREED WEIGHT BY UNIT OF THE GOODS - COMPULSORY GUARANTEE - EXCESS OF TOTAL WEIGHT AS A FORESEEABLE CONSEQUENCE - SUCH EXCESS TO BE TAKEN INTO CONSIDERATION ( COMMON CUSTOMS TARIFF, GENERAL RULES, SECTION C 1; REGULATION ( EEC ) NO 803/68 OF THE COUNCIL )