WW2 Imperial Japanese Army Copper Bottle Of Gas Mask Lens Anti-freeze

Small green painted copper bottle with pressed edges and a shaped neck, sealed with a rubber stopper which is fitted with an integral cotton pad applicator. A length of wire, also painted green, is fitted around the neck of the bottle and folded in a manner which provides a pair of legs, enabling the bottle to stand upright. A paper label in Japanese on the front identifies the contents as anti-freeze and adds.