Set of 3 wall shelves thong with metal studs in pins - design 1950

Very nice set of 3 vintage shelves with metal studs from the 1950s. 2 shelves with 2 trays (total height 55 cm), 1 shelf with 3 trays (total height 79cm). Each stud has a loop at each end to allow the wall to be fastened by screws. The plywood boards painted in red (original paint) attach to the studs by a system of notches. Beautiful general condition, metal studs with some rust marks, some traces also on the boards but this gives a nice patina.