Multistrux modular shelves from the 60s

Shelving unit made in Spain in the 1960s from wood (teak or mahogany) and iron by Multimueble. Multistrux model. In good condition. Can be placed on the floor or hung. Modular shelving unit offering various assembly options. It consists of four black metal frames and seven metal and wood shelves. One of the shelves has stains, visible in the photo.