Picked this up today. The price I paid will shock most of you. $175 for everything pictured. Everything works, too. The only thing that seems to be wrong is that the rotator motor is missing, though I'm arranging to get one from WSS along with some other parts.
http://s1372.photobucket.com/user/siren ... slideshow/
To list what I got: AR Timer, Siratrol ARCH reciever, and Thunderbolt 1000BTSB.
I should add that the photos were taken after about 3.5 hours of vigorous cleaning. It had been much dirtier and had much more surface rust when we picked it up. I very much recommend a cleaner called "LA's Totally Awesome Garage Cleaner and Degreaser", it's the only thing we used on it. That stuff, scrubbed on with some kitchen-type scratch pads and wiped off with paper towels, is what got the siren gleaming. A wire wheel took care of some built-up rust.
Little bit of info on the siren and controls:
Originally installed in Indianapolis, IN
Siren Head Made in August of 1980
AR Timer made in September 1989