Tag comprising a plate-like element (1) and a covering part (2).The plate-like element (1) has a central part (11) and a peripheral edge (12), said covering part (2) being superimposed on said plate-like element (1) matching with at least part of said peripheral edge (12).The peripheral edge (12) has at least one housing seat (121) of part of said covering part (2).Moreover, the covering part (2) is superimposed to said plate-like element (1) at least at said housing seat (121).