sorry about the delay - another trip out of town, this time to Seattle.
Having checked with Barfle, he's one clueless doofus.
However, barfle might suggest eBay. Also, there is a repair facility in Hawaiian Gardens, 1-800-824-7094.
I'm not sure about the hockey puck drive for the turntable, but the AM antannas were pretty generic, if it's one of those ferrite rod thingys that you can fold about 2" away from the back of the radio.
If you ever get up to Orange County, in the City of Orange there are myriad antique stores, and some of them sell antique radios. I'm afraid I can't remember any more details than that, but the restorers are pretty good at finding parts you and I would consider impossible.