Antique Vintage World War WWI Dough Boy Army Helmet With Liner

U.S. Army, issued during the World War I era. The brim of the helmet is 12-1/4" by 11-3/8", and the helmet is approximately 4-1/2" high... It has the original liner and an old address label from the owner on the brim... It has ZC176 stamped on the brim I am assuming it is from the manufacturer...

For the age of the helmet it is in good condition with nice patina on the outside of the helmet...