For sale is a very nice General Detroit Corp. Alaskan 704 fire extinguisher. This is a hand-pump type extinguisher and is made of copper. The pump moves smoothly and the extinguisher appears to be complete and in reasonably good condition for its age. The rubber hose is a bit stiff and shows minor cracking where it's flexed, but overall everything looks good. I haven't tried filling the extinguisher or operating the pump with liquids.