By Mine Safety Appliances Co. Ltd. Green rubber mask with a black fibreglass 'exo-skeleton' and horse-shoe clamp harness. The rubber is in excellent condition with no cracking or crazing. Very good exo-skeleton and harness. Fitted with an excellent corrugated rubber oxygen tube with alloy connector (6D/2003). This connector was intended for use with MK.9 sockets on ejection seats and MK.10A on fixed seats. It could be used with the obsolete MK.7 and MK.10 sockets but not with the MK.8 socket. Excellent Amplivox microphone, loom and plug. A very good example. Stock code O21192.