A photo of the underside might be helpful.
There is a surprising detail of this chair that might lead you to a result: the front stretcher and front rail. If you study danish dining chairs, you will notice that it is very hard to find a shaped wood front rail combined with a front stretcher. I believe the additional front stretcher is structurally not very useful. Normally the pattern you see would be that of the Møller 75, which has side stretchers, or the pattern of the Møller 71, which has no stretchers. Front stretchers usually only appear (and were structurally required) on chairs with a plywood seat and no front rail.
My point is that if you can find another identified chair with this same odd combination in your research, you might discover your chair was made or designed by the same.
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