A gas mask from 1916 - I saw this when I was roaming and had to buy it. I'd just given the builder a trifle and when I paid for the gas mask she refunded my L, which was unexpectedly nice. When I saw this gas mask it reminded me of the way my mother described my umbilical cord. She said it was as big around as the hose on an officer's gas mask (British Army, WWII). So - I suppose I equate gas masks with umbilical cords, which isn't exactly far off the mark as they are both intended to supply oxygen. She also said my umbilical cord had 3 knots in it - which I told her was caused by dancing.