This is a very fine example of a old Navy MK12 diving helmet manufactured by Morse Diving Equipment date on helmet is 1-85. This was bought at auction of the closing of the Long Beach Naval shipyard. It's been on a shelf ever since. The helmet does not show any signs of being underwater. It is the nicest MK 12 helmet I've ever come across. Has comunication cable and rear caps are intact. Interior of helmet is perfect to include the neoprene on the neck dam. Brass could be polished but the gelcoat finish is perfect. Have other helmets also. Email me with any questions. Good luck.