Cigarette package which has device to open and close

A package formed from a folded blank for containing cigarettes, the package having side surfaces, front and rear surfaces interconnecting the side surfaces, a top surface, and a bottom surface;

• the top surface of the package having a crease line formed therein spaced from and extending parallel to the plane of the front surface and first and second slots extending from ends of the crease line towards the rear surface;
• a portion of the blank forming one of the side surfaces having a first crescent-shaped part formed therein by a groove extending between an end of said first slot spaced intermediate said crease line and rear surface and the intersection of said front, said top, and said one side surface;
• another portion of the blank forming a second crescent-shaped part protruding from the portion of the blank forming the top surface, said second part being separated from the top surface by said second slot and being connected to the portion of the top surface located between said crease and said front surface;
• portions of said blank when folded being folded over said first and said second crescent-shaped parts to maintain the package closed, said top surface being foldable about the crease line to thereby open the package, wherein one of said-crescent shaped parts has a projecting portion for limiting movement of the top surface about the crease line when the package is opened.