Screw cap for a neck of a container -preferably a bottle- comprising an upper part removable from the neck and a lower part non-removable from the neck, said lower non-removable part being a tamper evidence band, ➢ said neck having an external face (2°) including downwardly and successively from the open top end: at least one thread, a lock ring and a support ring; ➢ said upper removable part of the cap comprising: - a top wall and - an annular skirt extending downwardly from the top wall and having a bottom edge which is linked to the lower non-removable part of the cap once said cap is fixed onto the neck after bottling; ➢ said TEB - being linked to the bottom edge of the skirt by annularly - preferably regularly- distributed frangible connection bridges; - having an inner face presenting at least one inwardly extending upper shoulder which is intended to abut the lock ring of the neck, during the container first opening, by unscrewing of the upper removable part of the cap, said container first opening involving the rupture of the connection bridges which are so upper markers of said container first licit opening; → characterized in that said TEB indicates, on the one hand, the container first licit opening and, on the other hand, any breaking in of the cap before the first licit container opening; → wherein said TEB comprises, below the markers of said container first licit opening, some additional lower markers of breaking in of the cap before the container first licit opening. ➢ said neck having an external face (2°) including downwardly and successively from the open top end: at least one thread, a lock ring and a support ring; ➢ said upper removable part of the cap comprising: - a top wall and - an annular skirt extending downwardly from the top wall and having a bottom edge which is linked to the lower non-removable part of the cap once said cap is fixed onto the neck after bottling; - a top wall and - an annular skirt extending downwardly from the top wall and having a bottom edge which is linked to the lower non-removable part of the cap once said cap is fixed onto the neck after bottling; ➢ said TEB - being linked to the bottom edge of the skirt by annularly - preferably regularly- distributed frangible connection bridges; - having an inner face presenting at least one inwardly extending upper shoulder which is intended to abut the lock ring of the neck, during the container first opening, by unscrewing of the upper removable part of the cap, said container first opening involving the rupture of the connection bridges which are so upper markers of said container first licit opening; - being linked to the bottom edge of the skirt by annularly - preferably regularly- distributed frangible connection bridges; - having an inner face presenting at least one inwardly extending upper shoulder which is intended to abut the lock ring of the neck, during the container first opening, by unscrewing of the upper removable part of the cap, said container first opening involving the rupture of the connection bridges which are so upper markers of said container first licit opening; → characterized in that said TEB indicates, on the one hand, the container first licit opening and, on the other hand, any breaking in of the cap before the first licit container opening; → wherein said TEB comprises, below the markers of said container first licit opening, some additional lower markers of breaking in of the cap before the container first licit opening.