RARE Vintage US Army Military M9A1 PROTECTIVE Gas Mask - Sealed Tin BS-280-492

The product is a rare vintage US Army Military M9A1 Protective Gas Mask, which comes in a sealed tin marked as BS-280-492. This gas mask is a piece of militaria from the United States and is designed for protective use. It is a collectible item that is associated with military history and equipment. The item is likely sought after by collectors due to its rarity and historical significance in the realm of militaria.