
I noticed that the Weltex had a tag, and I managed to get an up close shot:

Ladies and Gentlemen, we now finally have confirmation of the exact brand and model of the “Weltex” siren! It had been suspected for a while that these were E.D. Bullard sirens, however they don’t have the angled chopper that Bullards normally have. The tag reads E.D. Bullard Co, San Francisco, Model 3H27, - , Volts 220, Phase 3, - . All the names on all the maps that I own will be changed to match this new info. It looks like there could be a 3rd character after the 7 in 3H27, but it’s very faint and doesn’t readily match any character other than “+” so I don’t count it, as it’s most likely a scratch.