Wow, good to know. I just found out that B&M is still in business and offers restoration services. Not sure if I even want to do that, it works fine, and its weathered condition kind of adds to its charm. I do know I dont want to open it up since I know next to nothing about these. Thanks for th...

Thank you for your reply. This is the only tag on it located on the motor housing.

Hello all, new member here. I was lucky enough to get a hold of an old air raid siren. Was hoping someone here could help me out with a little background on what I have. It's very old and weathered, has a tag that say "B & M siren manufacturing" and the model number is either 10CA or 1...