Hi James:
That is cool. I have never visited Minerva, but I have been through the region. Surrounding towns include Cadiz (birthplace of Clark Gable), New Rumley (birthplace of George Armstrong Custer), and Steubenville (birthplace of Dean Martin).
One surprise deserves another. Sergeant Unkefer, whose given name was Arthur, shipped the helmet home to his father, Charles Homer Unkefer (see entry 75 from the link below).
http://www.genealogynut.com/unkefer/unkefer.htm
The original surname was "Ungefehr" and the family came from Bavaria. How ironic is that?
It's a beautiful helmet.
Chas. :thumb up: