I have this very old American Spiked Helmet and would like some help on it. I would like to know the date worn, what unit it was worn by. Also I would like to know if I should restore it by getting a good replacent cork helmet body and transfer the metal fittings to the replacement helmet. I was once told it was an officers private helmet since it was lined and made of cork with a black cloth covering. Also any idea what it is worth in it's present condition. Alot of the cork body has been lost as it had been crushed sometime in the past. Here are pics of the helmet. I can supply pics of the interior if needed. Thank you in advance for any info and comments.... Harold