As a helmet collector myself, I have to say "WOW".
As an appraiser, these are such "One-off's" that finding a value, even a range, is very difficult, and in some ways meaningless, until the rubber hits the road and they are actually sold. Most auction companies will post estimated value ranges for items, but in every auction there are some that under perform and most that hit in the range, and some that surprise everyone.
By
Mr.Jerry ·