Vintage three-tier string shelf

Vintage wall shelf from 1960-1980, type String, consisting of three levels fitting into two wire uprights covered in black Rilsan (some usual wear on the Rilsan, barely noticeable, see photos). Simple and elegant design. In good vintage condition with slight signs of use consistent with age and usage. 75 cm wide, 18.5 cm deep (20 cm total), 79 cm high.