Size large. Dated 4/64. Fitted with the smaller plastic Amplivox 13100 microphone and standard webbing harness. The rubber has slight cracking/crazing on the harness retaining lugs and around the inspiratory valve but the mask retains very good shape, is quite clean and generally in very good condition. The pearl grey lining has average soiling and the harness, microphone, loom and socket are all equally good. Stock code O20799.