I replaced my coll a year ago. I tested the coil resistance with an ohm meter. I got 1.8 ohms. They should be 3.0 to 3.2 ohms resistance. So, I take it, my “new” coil is already junk. Although there are parts readily available for these 80+ year old tractors, the new parts are junk, and the only ones manufacturing these parts is China.
Getting a bit tired and disgusted with the parts available being crap.

If you are ok with just having a worker and not a restoration project, you can replace the front-mount coils with the more common round can type. We have a tutorial in our How-To's/Electrical library that shows the process. The link is below.

Two notes about it:
1- I have been told it is a royal PITA to remove the black tar-like stuff in the bad coil.

2- The last photo is of a commercial product sold by Pertronix that is a bit pricey.

• Click here to view/download the tutorial

I see the pictures. Do you know what was used for the high voltage terminal?

I don't really know. I've always assumed that the author of that how-to cannibalized a spark plug for it.

finding good parts especially electrical is a true challenge in both tractor and automotive world....filko/blue streak/neihoff/standard/ that was quality stuff...i search ebay for NOS stuff.....sad world were in

I have heard of it as a landfill economy.

"Globalization’s great gift wasn’t low prices–it was the collapse of durability, transforming the global economy into a Landfill Economy of shoddy products made of low-cost components guaranteed to fail, poor quality control, planned obsolescence and accelerated product cycles–all hyper-profitable, all to the detriment of consumers and the planet."

Does the tractor still run satisfactorily? If it still performs, I would be more suspect of the accuracy of your ohm meter.There are a lot of low cost junk meters out there being made in China too.

No. There is not any spark. The tractor ran great when I first installed a new coil last year. It slowly started to misfire, I replaced the condenser first. Those seem to go more frequently. The tractor ran good again, then in a couple of days of using it steadily, it started to miss fire, and very hard starting. I checked for spark, and it was quite weak. It fired a little on one or two cylinders. Now, there is no spark at any of the plugs.

I would first try burnishing the points with some fine emory cloth. The contacts tend to oxidize after sitting idle over the winter. I store my 9N after bumping the starter while observing the ammeter to make sure the points are closed.