Yah, it's a big-ass heavy transformer, so the fidelity was most likely really good. One thing you need to remember about this transformer is it's also the bias for the tube plates - in this case, specifically, the first AF amp and the detector tube, so any transformer would also need to have those particular characteristics (whatever they may be.) It's not just a input/output device. It's not worth having rewound, that would exceed the value of device by a wide margin. What's ultimately going to happen is one of these three things: 1: I'll see one of these transformers at a show and buy it. If I don't see one at Dayton or Butler this year, then that's the cutoff point. 2: I'll see if the shell can be taken off without destroying the device, and check/repair broken connections inside. 3: It will go to the Early Television Museum as a auction donation. Many better equipped people show up there.