Mid century brutalist wall art sculpture in copper metal, 1970s

Unique mural, wall sculpture. It has geometric shapes in a steel frame. The shapes are made of copper and hung in the steel frame. The sculpture comes from first ownership. Design: Unknown artist Maker Provenance: probably Germany Age: 1970 - 1979 Condition: Good and used condition, according to age.the picture is not damaged. It has been cleaned. Dimensions: Height: 31.5 cm, width: 73 cm, depth: 3.5 cm Marking Signature: unmarked Material: Steel, lacquered; copper Note: The pictures are part of the item description. The item comes from a pet-free, non-smoking household.