I am restoring my parents baby bear and I'm try to get more information. I think it's a real early one. It has 4 fins on the damper, long taper on the legs, outlet pipe is welded on the outside, it has a handwritten "5" in weld bead on the bottom and "B-006" stamped on the inside of the door. The handle is straight and has a chrome ball on the end. Can anyone (Coaly) tell me what all means?