World War II era Japanese Civilian Gas Mask

This is a World War II era Japanese Civilian gas mask. This mask is in good condition for its age, and the mask has remained supple and pliable in spite of the years. This item includes the original unused filter, the mask, and the bag–all of which are original to each other. The only signs of wear present are some fading or staining on the bag and mask, and the button which would have held the flap down is missing.