[Diverted]

Thanks for the advice, all. I ended up corresponding with two gentlemen who'd had the exact part re-made for them by Heyboer. They noted diffferent ohm readings (likely due to thicker wire being used) but both said the part worked as it should, despite the difference from spec. That was good enough for me so I reinstalled the transformer yesterday, and finished up recapping the power supply. It will be a while before the set sees any power; for now though I'm finally making progress again. I have to say, Heyboer impressed me. They repainted the bell and even used the same color code transformer leads as called for in the schematic. Pretty great! And all this for $90+shipping. That can't be beat, far as I'm concerned.

Now to the hard part: The receiver chassis (GULP).