Have you compared them to any other winder spring?? They look very similar to most (manual) winder springs up to the introduction of electric windows.
What did you do with the rear doors when you took the sedan apart. If you still have them and the regulators are in them, the springs are all the same. I used a rear door regulator spring for the roll down rear window regulator in my coupe.
I have 9 of these that are listed as Willys 1932-34 NOS Auveco No. 1201 light red Lock Springs. If they would work let me know.
I have a few sets of rear regulators but I think they are in the same shape.I would feel more comfortable with new springs.