Rotary Inductors
 

I have three very high power E.F. johnson rotary inductors (high power
AM broadcast type, you could probably charge your car battery through
the tap!). They are about 6 inches in diameter and varry up to about 9
inches long (not including the heavy insulators, shaft, and mounts).
The two big ones are about 35 uH, the smaller one is about 10 uH. I can
provide photos if you're interested. I am asking $175 each for the big
ones and $125 for the smaller one plus shipping.

W7SX