Physical description

Front and back cover made of metal and held together at the back with a screw.
Push Button on the left (Press to Talk), also red wheel for turning transistor on and adjusting volume.
Aerial on the right at the top. Aerial 1.40 m long when extended. Front cover has inbedded a silver square metal mesh for hearing sound and speaking.
Brown leather cover with zip for protection.

Inscriptions & markings

9 Transistor/Sharp/ Model CBT-1A
Earphone/ Press to Talk/ Made in Japan

Handwritten on a piece of tape: Batteries replaced
1-5-1968, 6-6-1975