strange Russian M40?

Hi, I was looking around and I came across the attached. What is it? The rivet placement looks to be Russian M40 like, but it has a strange shape. First the squared off peak, and then the ‘ear flaps’ seem more pointy and less flanged than normal.
No liner or stamps to help out.
Regards
Steve 33.0 KB25.7 KB31.4 KB


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