In 20 plus years of dealing in gas masks, this is a model that I've only heard stories about and seen in old movies. It was found deep in the storage area of a police department. It is in its original bag. The markings on the mask suggest it was made in 1971. It is in new condition with no signs of use. The rubber is soft and not brittle or fragile. The bag has their distinctive American Eagle silkscreen on it. There is writing on the inside flap of the bag - we've been told that this is the serial number for the mask. This mask is from a time period when the company was owned by Smith and Wesson, the well known gun manufacturer and is a unique item for Smith and Wesson collectors. They later sold the company to MSA (Mine Safety Appliances) who today is one of the leaders in respiratory protection. It's also a really cool costume piece for those who collect gas masks. This is sold strictly as a collectible item as there is no way to know if the filters are good (or have become toxic) after 50 plus years. If one wanted to wear the mask, the filters can be removed by loosening the hose clamp and pulling them out. There are two filters, a prefilter for particulates then a chemical filter cartridge.