Original U.S. Post WWII Morse Diving Equipment MK 5 Deep Sea Dive Knife with Brass Scabbard and Leather Securing Strap Japanese Navy There was no one set

There was no one set pattern for these

Both bear Präsidialkanzlei (Presidential Chancellery - PKZ) number 107 on the back just under the pin hinge

No original color remains and there is evidence of previous pitting on the now polished steel surfaces

of New York

Original U.S. Post WWII Morse Diving Equipment MK 5 Deep Sea Dive Knife with Brass Scabbard and Leather Securing Strap Japanese Navy There was no one setOriginal Item: Only One Available. These are most uncommon today but were essential equipment for the hardhat divers of the WWII era into Vietnam. This unique knife was designed to be an all purpose tool for use by deep sea divers who utilized the Mark V dry suit diving system. The Mark V system was adopted by the US Navy in 1916 and served until about 1979, when it was replaced by the Mark 12 system. The Mark V system is the classic deep sea diver