Eveready Smoke and Ammonia Helmet
This is a rare one that has its own air supply just like a diving mask. I'm guessing this dates to the 1870s when other contained air supply designs first appeared. The eyes are Mica. This example is signed on the tank and reds... "Eveready Smoke and Ammonia Helmet made by Servus Rescue Equipment Co. of Newark N.J."
