This vintage Retro "tank track" bracelet, dating back to the 1940s, is made of 18kt yellow gold. The design features a triple row of interlocking arched tank track links, showcasing a strong geometric and voluminous style that captures the bold spirit of its era. It measures 8 inches in length and 1 inch in width, with French gold importation marks, maker's mark and '750' stamped on it for authenticity.