A recloseable stopper for revealing a first opening includes a base body for positioning on a container mouth (12), from which base body a pouring element extends upwardly, and a protection and closing cap integrally and hingedly connected to the base body. The base body also includes a guarantee ring connected by frangible bridges to a collar. The cap is firmly positioned on the base body for closure. A tamper-proof feature is provided between the base body having the pouring element, and the cap, for revealing a first opening, which includes a double frangible connection system which can be actuated towards the inside of the cap.