Mark, Murray Ohio made a number of variant Lincoln Zephyrs in the late 30s up to the beginning of the war under their Steelcraft brand. Your car is specifically a 1941 example. That's the year they introduced the wheel style found on your car. I have attached a catalog page from the 41 Steelcraft catalog. You will note that the body and wheel colors match your example. As you state in your description, your car has the more favored windshield and front bumper as also shown in the 1941 catalog. Hope this helps. I realize I'm very late the party.
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