Spooky helmet...
Well, Cliff,
Thanks for the pic, and I will now take your word for it being beyond practical use. However, I cannot see you burying it - it saw you through a lot.
So, suggestion: place it on a mannequin head, carefully apply liquid leather conditioner, and after it has softened the leather again, carefully sew up the tears.
Good for another sixty-five years of viewing at least...
Cheers!
Dave