Rare British Small Box Respirator supplied to all British troops from 1916 onwards to replace the earlier PH helmets. This example is in good condition for its age, the fabric and rubberised mask is still flexible, the nose clip springs still work and the rubber hose still has some movement. The rubber ‘flapper’ exhale valve is detached, but unusually still present, most having been lost as they became hard with age and snapped off, it has been repaired with an epoxy resin to make it stronger and prevent deterioration. The head-straps, bar one, have detached from the main harness, but are all still present, they could easily be backed with material to reattach them, or alternatively the mask is strong enough to be displayed on a wire stretcher mount fitted under the fabric rim. The mask fabric has a small piece of damage to the right side but is in otherwise good condition. The eyepieces have some crazing to the internal yellow cellulose filters which are still present, but the glass is still strong. The haversack is an original and in good, strong condition with issue stamps still present. The owner’s name is just visible in pencil to the rear. The filter still retains much of its original olive/brown paint finish and is not yellow painted as the US masks were. It still has clear maker’s stamps by Boots the chemists, and Barringer, Wallis and Manners Ltd who made many of the British masks during the war. A perfect display-case example for the WW1 British collector.