Federal Signal Mini JetStream bar

Mini JetStream model JM.
Saved from the junk bin at a flea market, was able to restore the Red dome to VG condition. Colored "Jet" series domes are quite uncommon, I would probably even go so far as to say "rare" which is why I grabbed this bar.

A question for those that might be in the know... Did Federal ever make colored end caps for the Jet bars? This light has a clear end cap, with a red insert.

Thanks for watching.