Kaiser Leuchten square wall or ceiling light, textured glass, 1960s-70s

Wall or ceiling light by Kaiser Leuchten, Germany, late 1960s to 1970s. Square form with a thick textured glass diffuser with a subtle marbled pattern, giving a soft, even light. It can be mounted on a wall or on the ceiling. Condition: please see the photos. Dimensions (width × height × depth): 37 × 37 × 10 cm (14.6 × 14.6 × 3.9 in).