New in plastic bag , see pictures !TheYugoslavian JNA gas masksdate from the 1970s to the 1980s, with no choice of year—I received a maskdated 1978. They are exact duplicates of the extremely popular U.S. M9A1 gas mask. It is one of the most copied designs in the world and is one of the only proven-in-battle gas masks to work against nerve agents and mustard gas. The Yugoslavian gas maskCheaper Than Dirt!sells is the model M-1. Included are the gas mask, canvas bag, instruction book (not in English) and one 60mm-threaded filter. Each gas mask is new—never issued—and is heat-sealed in a plastic bag. The filter also comes in a separate, sealed plastic bag.The MaskConstructed of a grayish-green, extremely flexible rubber, the gas mask has stretchy nylon straps that crisscross around the back of your head. There are six adjustable areas you can tighten or loosen to fit the mask tightly over your head. The neck strap at the bottom has a snap to secure it even further. The adjustable slides are smooth, and adjust easily and quickly to tighten around your head, but also stay in place after adjusting.On the right side of the gas mask, an “S” with a circle around it indicates the size of the mask. Mine is a small, and still hangs down over my chin no matter how much I tighten it. Though I have read that the M-1A Yugo gas masks from this era were given to both civilians and military, I assume the mask was intended for men and not women or children. I do not trust this surplus gas mask to get me through any type of nuclear attack, so the size doesn’t matter. Even unissued and unused surplus gas masks are collectible or for costume use only. Filters have a short shelf life andCheaper Than Dirt!cannot guarantee the filter included in your gas mask will protect you from inhaling toxic chemicals.On the gas mask’s left cheek is the location to attach the 60mm threaded filter. On the mask’s right side, a stamp reads “23-78-1399,” or at least I think it does—the last four numbers are smudged.The Instruction ManualInside the bag is an instruction manual that is not written in English. It appears to be Serbo-Croatian. The front of the booklet has some blue ink writing and purple stamps that have become too blurry to interpret. Using Google translator from Serbian to English, the best I can figure out is that my mask is a Model MC-1, has the year of manufacture and batch number. The rest is unreadable.All together the mask, bag, filter and instruction manual shows signs of storage wear and age, but nothing about the mask, bag, filter, and hardware are brittle or degraded. Though not an extremely rare gas mask, it is still an uncommon gas mask in the United States. Not many of these gas masks were imported, so supplies are limited and will only dwindle further. For the price, this is a good piece to add to any collection.