WW I Red Diamond 5th Infantry Division Brodie Helmet 100% Original Complete

If you know you know. He's in his late 80's it was his grandfathers according to him. I'm not an expert and have reached out to the WWI museum in KC. Perhaps they can shed some light or if you all know something that may add to the listing please share. I looked at similar items the cards on the front are of a Red Ace of Diamonds and a Red 8 of Diamonds perhaps a unit of the 5th?

All intact and original unmolested a tad dirty but I didn't want to mess with it. Please look at the pictures as they ARE of the item you will receive. This WW I Red Diamond 5th Infantry Division Brodie Helmet is a rare and valuable collectible from the United States. Being 100% original and complete, it holds historical significance as an authentic piece from the era of World War I. The helmet is a perfect addition to any militaria collection, representing the bravery and sacrifice of the soldiers who served in the Great War. Its unique design and authentic origin make it a standout piece for collectors and history enthusiasts alike.

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