Description 24 mm Ralley Strap No 310 very nice Ralley Straps, Swiss made, vintage made in the 70s, NOS condition, made from black Calf leather, 24/16 mm 180 mm long, 4.5 mm thick, comes with satin ss Buckle stamped „FOS 16 mm“ , open ends with ss clips, Great Straps matching to your vintage 70s Watch,