[Boatanchors] WTB: TRIMM FEATHERWEIGHT Headphones

[Freeberg, Scott (STP)]

I'd like to find a nice pair of high impedance TRIMM "Featherweight" headphones for my regen receiver project.  I understand there were several impedances offered.  A friend is using a 5K ohm pair with his regen receiver and is raving about it :)  I'd like to find either a 4K or 5K pair for my regen project.  Looking for clean and nice condition.
Thanks. 73, Scott WA9WFA