Longines 13ZN Chronograph Sandwich Dial in 18k Yellow GoldIn the mid 1930s, Longines created the legendary 13ZN a movement that would become one of the most celebrated chronograph calibers in watchmaking history. Widely considered by vintage connoisseurs to be one of the finest and most sophisticated in house chronograph movements of its era, the 13ZN remains a benchmark of technical excellence and craftsmanship. This example is fitted with an exceptionally rare sandwich dial, featuring cut out numerals that