via this auction

Powers up fine and there's sound, some notes down the bottom end are not working, (dividers?), around 8 or 9 of the buttons don't seem to function anymore and the envelope doesn't seem to be working as it should. It's also missing the 2 wood effect strips from the sides, and one of the screw in feet underneath has walked. A couple of the keys are slightly raised but still function. There may be other minor issues but I'm unable to test it fully with some of the buttons not functioning.
It's by no means the usual Polymoog basket-case and should be easily repairable by the right person with the time and expertise to do it. It's a very late serial number so most of the commons issues with these had been ironed out by that time."