This is the Canadian Military C3 Gas mask with filter. It is otherwise known as the No.2 Mk.II protective mask. It was developed in Canada by the General Tire and Rubber Company and used between the 1960's to 1980's. The filter uses a 60mm thread size. Fully adjustable straps, 100% rubber mask. You can purchase it with or without an original carrier. Sold as a novelty only.
***********This is for novelty use only********