Stores ref. 10A/9004. Most of you will probably know this as the Microphone, mask, type E (ref. 10A/9003) but technically that refers to the microphone complete with wiring and plug. Anyway, the microphone consists of a bell-shaped, chamois covered, black painted aluminium carrier. Within this the actual microphone componant is mounted (10A/7355). Part of the inside of the carrier is sprayed with powdered cork which acts as an insulator against condensation and noise. To the base of the carrier are two moulded breathing vents and at the top is the toggle switch. This example is in excellent condition retaining all of its chamois. Whilst this appears to be original and certainly has age it might be a very good re-covering. These microphones were used with the cloth Type-D oxygen masks and pre-date the flat-fronted type 18 (type 19 when mounted/wired). Photographic evidence suggests they saw considerable use during the Battle of France. Check out the photograph (item 12414) of the Hampden crew in Nov. 1940 as they all have this type of microphone. Super condition and a rare find these days. Stock code O16548.