Friend of ours is cleaning out his collection, including a couple dozen RF decks from R-390A's.  These include the tuning gearbox, slug racks, and a few tubes in the receiver's front end.  Some of the modules have the xtal switch box and turns counter as well.

If anyone out there would like these things, they're free to a good home... just need to swing by and pick them up in Chapel Hill, NC.  Or.. arrange creative shipping.  I really hate throwing out such beautiful hardware.. :)

73, John K4OZY