Manual Bellow Air Pump, Fire Siren/Fog Horn, Siebe Gorman & Co. This is a foot operated air supply pump for either a Deep Sea Diving Helmet or Firefighter's Smoke Helmet.
Instruction plate on this specific item indicates it was used for Firefighters. As more advanced & efficient methods, which included oxygen tanks, etc. Became available, Siebel Gorman Co. Condition as noted in pics - 4 "buttons" on bellow missing, but does not affect operation.
This item is in the category "Collectibles\Historical Memorabilia\Firefighting & Rescue\Hoses & Nozzles". The seller is "jlcampbellhart" and is located in this country: US. This item can be shipped to United States.