4 'Ant' style dining chairs (set of 3 + 1 other) (Didsbury M20)

Set of 3 matching chairs in a reddish-brown finish, plus 1 in black in the same style (not an exact match). In the style of Arne Jacobsen/Fritz Hansen but presumed not genuine pieces. Various 'dings', more noticeable on the brown chairs; the worst example is shown in one of the photos.