I purchased this M1 for friend. It only cost 90 US so I could not pass it up. The color is correct although the photo looks a bit blue. Cloudy skies today. It is a swivel bale, front seam example with cork textured paint. The liner is marked with the F of Firestone and 21. The shell only has a "90" heat stamp marking. I could not locate any information on this number marking. Assistance appreciated. NH
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