Japanese WWII Ships Radio Telephone Mouthpiece, Wreck Recovered

Original era manufacture. Japanese WWII Radio Telephone Mouthpiece,found on a sunken trawler.Recovered in the 1960's by a husband and wifeworking at the US installation on Kwajelein, who took up scuba diving to pass the time. Comes with a handwritten 3x5 card used in an old museum display established by the couple.