[Arran]

It would not be the first time someone among us misidentified a part. I can remember working on a Sonora AC/DC set where I thought I found a faulty mica capacitor, the Ohm meter found "leakage", confused as to why the radio still did not work afterward a friend of mine figured out it was a resistor, a Micamold brand resistor. Micamold did not just manufacture molded mica capacitors, they did the same with paper, in similar cases, and wire wound resistors too. You may see the odd post about someone cursing at Micamold paper caps, it's not that they were poorer quality then any other paper cap, but they fail just like bumblebees/black beauties, and Sangamo "Little Chiefs" do, when they leak they get hot, and blow the end off or split.
I would guess that this choke/coil was wound with either 16 or 18 gauge wire, which is typically heavier then what a capacitor would use for lead wires. Though it doesn't help that they put this mess inside a waxed paper sleave, with no markings, though maybe that was their idea of tipping off that it wasn't a cap?
Regards
Arran