This Vintage Maestro Phase Shifter looks like it could be a good deal for someo'e who could fix it up. It doesn't have the 3 button footswitch switch, so youd have to manually switch it. I have a working one identical to this *with the 3 button footswitch.
Its kind of a one trick pony, as there are only three fixed phase shift speed settings, and the middle one is generally useless as far as I am concened, but the slow one sounds very good & the fast one will give you that Rick Isley "Whos that lady" sound.
One good thing is that theres a screw in on the bottom to mount onto a mic stand for convinient pushbutton operation.;
http://cgi.ebay.com/Maestro-Phase-Sh...3A1%7C294%3A50