911caddy said:
Dominion Auto sold these tiny sirens in Canada. I'm not sure who produced them. They came with a rear bullet and a base similar to a CP25 pedestal. There have been a couple of these on eBay recently. A true peanut whistle. Loud with no coast.
I have one like yours but chrome.. It's missing the rear bullet and pedestal too, as it had been mounted behind the grill of an Industrial (Chev suburban) Ambulance.
For some reason the picture on this read won't load on this computer. However, based on what I've read, and the Dominion comment, it sounds like this is one of the sirens built by Auto-Matic Products Co. of Chicago. They marketed a lot of their sirens through dealers after Federal quit building for Darley. Auto-Matic is no longer in business. Originally they marketed their small line of sirens for boats and/or vehicle alarms, but they also caught on for emergency vehicles. They also built for North American and a couple of other companies. Their version that resembles a Federal WG was called the "Admiral". They made several variations, much like Federal did, but in only two sizes. The 6" size came either full chromed as in the Admiral mentioned above, or painted black with a choice of mounts and grille styles. The smaller size about 4" could be compared to the Federal VGs or O sirens. These sirens were relatively inexpensive and were well made. John Dorgan has a siren similar to one of theirs on his website, but it's a Chinese "knock-off".
The easy way to spot the difference between the Darley "Champion" sirens and standard Federals, is that the Champions all used the pedestal style bracket, such as seen on EGs, 28s, etc.
