I finally found something that from pictures has most of the features of the 1939 9N. I'm making the trip this weekend to go check it out! Wish me luck. They're trying to get to storage before hand to get the serial number for me but it has so many of the early features I'm probably still interested if it turns out to be a 1940 or 1941. Picture show the correct grill, radius arms, large diameter front wheels, the tires look correct when I compare them to the Dennis Carpenter catalog and it's all gray. The rear axles are riveted though and I can't see the fender mount casting boss. It has thew 3 spoke wheel. I don't know why the 4 spoke always seems to get replaced when you can get aftermarket 4 spokes.