Hard to be sure with aged individual / chippy wings, but I prefer Cercyonis oetus (small wood nymph) as an ID, for the lower eyespot being smaller and closer to wing edge, what looks like remnant checkering of the wing edges (you have to lighten the image to see this), and lack of decor on the underside HW.

It indeed more looks like a Cercyonis oetus. I guess my field guide is too old. Thank you very much!