External flying helmet wiring loom. Stores reference 10A/10353. Type Q loom wired to a type 20 microphone (type 21 when 'mounted' as here) ready for fitting to a type D oxygen mask. The type 20, stores reference 10A/11994 has a black painted alloy casing and is often referred to as the "1941" pattern although it was actually introduced in October 1940. It is in excellent overall condition with only very minor paint loss on exposed edges. Air Ministry and King's crown markings. Retains the original rubber "band" around the microphone on the reverse although this has hardened. The dark tan/plum coloured loom is very clean and fitted with a black cased bell jackplug, stores reference 10H/735. An excellent loom ready for your B-type helmet. Stock code O22983.