Where are all the old sirens going? If that information cannot be given, that's fine.
Call the power company and ask.
When I got my pile of new-old-stock siren parts from Pennsylvania Power and Light the guy I got the stuff from was in charge of
reselling material/property from the power company to try to recover some of the cost that went into the property. He resold all kinds
of stuff. He told me that he even had to find buyers for huge transformers.
I asked him what was happening to the old sirens they were removing and he said that they are cutting the poles and letting them fall.
I don't know if it was the company that was installing the new sirens or who it was. I didn't ask because that was in Pennsylvania
and I'm in Texas. If you could find out who was removing these Nine Mile system sirens you might be able to get one from whoever
is removing them. Even if they are cutting the poles and dropping them, with thunderbolts they would really have to land the wrong
way to completely destroy one.
Proud owner of a garage full of junk.