I have an old pear shaped glass bulb fire extinguisher. It is full of some clear liquid. It comes with a wire rack that you hang on the wall. If a fire happens, the sauder holding a spring will melt, and spring up and break the glass, dumping the contents on the fire. Also, according to the directions, you can throw the glass at the base of the flames. It is in pretty good condition. Some rust on the wire rack, but otherwise good shape. I would like to know what it is worth, if someone knows. I can provide pictures.