signed wijmer painting

These paintings has been in my family for a very long time , I loved them throughout my childhood, so my mother gave them to me 40 years ago, it been in my home ever since, signed by the artist wijmer on the top right, no company stamp on the back, it is a mountain scene, measures,3ft tall X 6ft wide in a nice antique original gold frame. we never had it appraised. hope you can tell me something about this painting . by the way we had two paintings signed by wijmer same size, but it was damage and I threw it away 14 years ago.

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