I've wondered about this myself. Are antique radios a good investment for flipping? I wonder what the resale market is like and whether the demand is there to drive up the value. I think it must be a regional thing because I've never seen them in antique shops or estate sales around here.
I've never seen them around my town either. Maybe it's a regional thing or maybe it's just a specialist thing. I wouldn't think they'd be easy to resell unless you bought it in great condition. Like most antiques, I think it would be pretty costly to repair it.