I never liked the eye shields. Really cut the light output of the light. On the FD we had guys paint the back and left side of the blue dome or put aluminum foil inside the dome which may be a problem for long on times. I preferred throwing my FB on the roof for the 360 effect. More folks moved out of the way especially at night
Strip-down and clean-up of my new Very first version Fire Ball FB-1, Serial 2A10, 1956 vintage, (going on 63 yrs. old), came out very well. See if you can pick out the differences from the typical 2A12 serial.
Just latched on to my 2nd Darley rebadged early FB-1 to add to my collection.
W.S.Darley was a large municipal/police/fire supplier back in the 1950s and 1960s. They had Federal rebadge Fire Ball FB-1 s with their own part number H573, (instead of FB-1), stamped in the clamp ring, no sticker was applied. Here are a couple of pics. I'll add more after received and cleaned up.