In a second aspect of the invention, there is provided a cap mould
, comprising a body suitable for being associated with a container neck and provided with a dispensing arrangement, a lid arranged for closing said dispensing arrangement, an opening indicating device connected to said lid through a breakable arrangement and comprising a hooking arrangement arranged for engaging a corresponding further hooking arrangement of said body, wherein said further hooking arrangement comprises engagement promoting arrangement arranged for inducing said hooking arrangement to interact with said further hooking arrangement.