US Navy Mark V Diving Helmet - A.J. Morse & Son April 18th 1918!
Here is your opportunity to own an early full serial number matching World War One US Navy Mark V diving helmet! This example was made by A.J. Morse & Son Inc. on April 18th, 1918. The helmet’s serial number is 2491, making it one of the first 300 Mark V's made by Morse (they started around #2200). To say the demand for the Mark V helmet has increased in the last few years would be an understatement. WW1 examples with all seven serial numbers matching and exhibiting this kind of fantastic patina are prime investment level pieces that rarely ever turn up.
Visually this helmet has everything you would want in an original WW1 Mark V. The copper body and brass hardware all feature a rich dark patina that started forming over 100 years ago. All the following items are intact; all 12 of the wingnuts, four brails with Morse name and matching serial number stamped into each, window guards, glass, spitcock valve, air and communication fittings, eight-pointed exhaust wheel (generally used only from 1916 to 1918), ID plate, neck ring gasket, exhaust chin button, internal air vents, very old reproducer, old communications wire, non-return valve, communications fitting and short length of wire.
The flaws this helmet has are surprisingly few and inconsequential. The top of the bonnet does show minor shallow working dents, which are to be expected. One of the four brass screws that hold the faceplate window guard is twisted off. The dumbbell safety latch was removed long ago, and a drop pin style safety was installed. While not a fault, the twelve threaded studs appear to have been cleaned to easily remove and install the wing nuts.
Without a doubt, this is an impressive Mark V. Serial number stamped on ID plate, both neck rings, and all four brails leave no doubt this helmet started life altogether. The fact the original eight-point exhaust wheel is still intact after 103+ years is incredible. Do not pass up this opportunity to own one of the first Mark V helmets ever made in beautiful all original complete condition!