Pre-owned, 10A/7064 single sealed headphone, ex-Royal Air Force(?), head band

Description

This single headphone is marked '10A/7064' on the head band. The tinsel-type leads have been cut or frayed short about 20 centimetres from the headphone.

A check with an ohmmeter shows a resistance of about 65 ohms and gives a slight rustling in the headphone, so is believed to be working.

Unscrewing the front and gently sliding off the diaphragm sideways reveals a small white humidity indicator.

There is some tarnishing and scraping on the headphone, while the diaphragm shows superficial corrosion on the front, which would not affect the sound.

No further disassembly or other tests have been carried out.