import authorization or document automatically within five used must be white writing paper , sized , and weighing ---pagebreak--- N ? L 293 / 130 Jornal Oficial das Comunidades Europeias 16 . 10 . 86not less than 25 g / m2 . Each part shall have a printed checking the authenticity and accuracy of export licences andguilloche-pattern background making any falsification by certificates of origin issued or declaration made under thismechanical or chemical means apparent to the eye . Protocol .If the documents have several copies , only the top copy whichis the original shall be printed with the guilloche-pattern Article 19background . This copy shall be clearly marked as 'original'and the other copies as 'copy'. Only the original shall be Egypt shall send the Commission of the Europeanaccepted by the competent authorities in the Community as Communities the names and addresses of the governmentalbeing valid for the purposes of export to the Community authorities competent for the issue and verification of exportin accordance with the arrangements established by the licences and certificates of origin together with specimens ofAgreement . the stamps used by these authorities . Egypt shall also notify the Commission of any change in this information .2. Each document shall bear a standardized serialnumber , whether or not printed , by which it can beidentified . Article 20This number shall be composed of the following elements : 1. Subsequent verification of certificates of origin or— a number indicating the quota year , export licences shall be carried out at random , or whenever the competent Community authorities have reasonable— numbers running from 00001 to 99999 allocated to the