I found an M1917 (I believe anyway) helmet at an antique shop today. It was labeled simply "WWI Helmet". First I have ever even seen in person in my life, so my level of knowledge/research on the subject is not huge. I did make sure that the bail holders were riveted, and to my eye, the finish is correct as well. I did manage to find a magnet to test with and the shell itself is not magnetic, as it should be, the strip of metal along the rim of the helmet is magnetic.

Now for the reason I took a chance in buying the helmet. Quick research told me that the stamped markings usually start with a Z and include a string of numbers. This one literally says nothing other than "4B", and there's a blue paint marking that says MT-1.

Here are the markings:





Here are the rest of the pictures of the helmet:















So what do you think? Did I get duped, or could this be something unique?
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