Saw this helmet at an antique fair in Central Illinois today and noticed it was at one time a front seam (the rim is gone but you can clearly see that it met in the front). I picked it up, turned it over and saw that it had fixed bales. I then noticed a coat of ancient white paint on the front that looks a lot like a shield shape with a black border. Unfortunately for some reason my camera isn't doing the insignia any favors. Well anyway the shield has a what looks like a red 1 in the middle.
I walked up to the dealer and asked how much for the helmet and he said the most wonderful thing these ears have ever heard! $20
It has a CAPAC liner and is missing the chinstrap.