WW1 helmet markings

CarlThePiper

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Jul 22, 2014
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I have had this WW1 American helmet of some time now but have never really taken the time to examine it closely. Upon my inspection I discovered markings that read H5 477. The 5 may be an s but looks more like a 5 to me. I need information as to what these markings mean. Speculations are helpful as well.
 

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I have had this WW1 American helmet of some time now but have never really taken the time to examine it closely. Upon my inspection I discovered markings that read H5 477. The 5 may be an s but looks more like a 5 to me. I need information as to what these markings mean. Speculations are helpful as well.

That is a steel lot number marking. At the time the helmet was made you could figure out who produced the steel in it and when that steel lot was made but the records no longer exist.
 

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