Any ideas on the following pair of Japanese headphones? 
Dated 18.3 TK-32 marked. Couldn't find a legible anchor, star or cherry blossum. Looks like it never had any kind of headband or strap for the head. Right and left side cords come together in a "Y" and lead to a single plug. Don't know if they could be aviaition. A local collector thought they were for the radio operator on an aircraft. Thanks!
Dated 18.3 TK-32 marked. Couldn't find a legible anchor, star or cherry blossum. Looks like it never had any kind of headband or strap for the head. Right and left side cords come together in a "Y" and lead to a single plug. Don't know if they could be aviaition. A local collector thought they were for the radio operator on an aircraft. Thanks!