A very cool and nice condition genuine original RAF Mk.4A fighter pilot or helicopter pilot flight helmet (1990's?) complete with detachable V Type oxygen mask with MQR helmet fittings and hose with connector (understood to be from a Jaguar Fast Jet).  Helmet has retractable clear and tinted sun visors with hard protective shell and includes the avionics ear cups / phones, microphone with boom and related wiring leads. I believe the size is a medium.

Some of the inner foam linings are beginning to deteriorate. There are a few marks here and there as can be expected as it is used, but nothing major.
Please look at the photos, as they show what you will receive and its overall condition.

Bust used for display and not included in sale.Royal Navy / Army Air corps issue and superseded the Mk.3C helmet in the 1980`s. The shell is made of glass fibre impregnated with polyester resin and lined with shock absorbing expanded polystyrene, the interior is fitted with a multi-point adjustable webbing harness system with adjustable independently suspended earcups. The helmet has a locking clear inner blast visor and a friction mounted outer tinted visor with a protective shell, avionics consist of twin 300ohm speakers giving an impedance of 150 ohm (1khz) terminating with a 18" downlead and single pin NATO jack plug, mounting blocks allow the fitting of hooks for various type oxygen masks. The Mk.4A has locating holes allowing the fitting of RAF or similar Boom Mikes.