Classic green rubber mask with a fibreglass 'exo-skeleton' and horse-shoe clamp harness with later chain fittings to help prevent twisting. The rubber is in excellent flexible condition. Good exo-skeleton and harness. Fitted with a plastic Amplivox 13100 microphone/loom and multi-pin Socapex connector plus a very good corrugated rubber oxygen tube with alloy bayonet connector (6D/2053). This should fit the MK.4 and ALPHA MK.10 series helmets. A very good example. Stock code O24977.