That's what I was going to say, it looks like a Voice of Music turntable inside that old Capehart, it should be a pretty easy unit to get up and running again, and parts are still available for it over at
http://www.thevoiceofmusic.com which Gary Stork over there can hook you up with any parts you may need, he'll probably have the parts for your Zenith Cobramatic as well.