The invention refers to metallic coroniform caps for glass and metallic bottles containing liquid and viscous substances; the caps have cogged lower edges (1). The invention objective is creation of a coroniform cap that can be safely opened without any opening accessory. The essence of the invention is that while cutting the cap plate out of metal sheet a certain section of intermediate waste is not cut and removed, but is left with the plate to form a tab (2) (or 2 tabs). The stamping machine extends the corrugation of the cogged section onto the tabs, thus providing them with rigidity necessary for opening. The bottle is opened by exerting pressure on the tab from underneath with forefinger and removing the cap. The tabs may be arranged at 75 °, 90 ° or 180° angle to each other.