K731 electrostatic speaker

[one-eyed fatman]

OK folks, I have a nice 7C07 chassis K731 in the Danish modern cabinet whose electrostatic speaker has died. I have tried a couple of the tricks to fix it, but to no avail. Any clunkers (with a good speaker ) out there that would be suitable as organ donors? I hate to knock another nice radio in the head just for a speaker, or other part But if a servicable speaker can be found, one more can be saved.