No pics as of yet, but its labeled elkay on several parts and from what i can see, the two variometers look identical to these from 1925. Well, at least to both the 4 and 5 tube models in the pics.
http://www.radiomuseum.org/r/langbei...lector_4s.html
EDIT
when it rains, it pours variocouplers. I just picked up a nice bakelite kellog on epay, with a few loose windings of course.
Is there a trick to rebuilding these?