Size medium. Dated 4/58. Fitted with the earlier type 57 microphone and the adjustable metal 'horseshoe' harness for use with flying helmet hooks (G-helmets/bonedomes). No exhilation valve fitted. The rubber is in excellent condition with only a little cracking on the harness retaining points. Really quite clean externally and the pearl grey chamois lining is very clean. The harness is equally good as is the microphone, loom and socket. Similar in design to the H-1A mask in having the metal suspension mechanism but differs in having no inspiratory valve fitted in the cheek section. An excellent used example of this less common Type H variant retaining very good overall shape. Stock code O11032.