I have a 1962 Air Force issue GAS MASK brand new, still in the unopened, undamaged can, with opening key still attached. This is the ultimate military collectible item. It was issued in 1963 to the 95th Civil Engineer Squadron and stashed in a bomb shelter under the Mojave Desert, where it remained until I found it in 1995. I also found two 50 pound cans of fortified hard candy, but we ate it. The value of this thing is inestimable in it's current excellent condition. I only want $400 for it. What are you waiting for? Call and ask for LeRoy!