A method for crowning a container neck, such as a bottle, by securing or crimping a cap provided with a skirt on the neck, the neck including a glass ring with a lower shoulder, including the steps of a) crimping the cap to the neck, so as to form a swaged portion of the skirt; b) marking the swaged portion of the skirt with an etching device, to form an etching on the swaged portion based on an etching pattern. The visual mark reduces the mechanical properties of the swaged portion, so as to prevent any fraudulent attempt to uncrimp the cap from the neck or any recycling of the bottle.