British WWII Fullerphone, Morse Code Buzzer & Headset

Original era manufacture. Appears to be complete, and apparently unused, with a 1944 dated 'buzzer' housing. The earphones are attached with a tan canvas headstrap with a 194x date, instructions in the lid as shown.The casing is of wood, green painted, with aluminum edge reinforcement. Canvas shoulder strap is also near new condition and dated 1943.