01-09-2015, 12:18 PM
Unfortunately it doesn't seem anyone has the info you're looking for. I found a video by Richard McWhorter that shows the coil. From that and Chuck's info ... if the primary is 100 turns then the secondary looks to be approximately 250?? assuming its a single layer wrap. I know there is a celluloid insulator between the two wrappings as well. The direction of the wrap also makes a difference and I can't help there as I don't have a 90.
You might try contacting Play Things from the Past. He doesn't seem to have your coil listed but then I don't think he has everything listed.
You might try contacting Play Things from the Past. He doesn't seem to have your coil listed but then I don't think he has everything listed.