A very good condition 1917 Pat. WW1 U.S. small box respirator, complete in its correct period carry bag.
Face-mask is of rubberised cotton, being in, well above average condition for its age. There is some flaking and age hardening to the rubberised interior. Eye pieces clear and in very good condition. Nose tongs complete and in serviceable condition. All elasticated head bands present but with elastic now a little fragile, and one band broken. Small hole to mask front (see images).
Correct filter box in matching very good, rust free condition.
Hose is with the usual age shaping, and some hardening.
Carry bag is slightly grubby, and is in the main damage free with only a small wear hole to front bottom edge. Cover flap has ’typical’ U.S. securing fasteners.
Owner / user name in indelible pencil to bag front (see images).