In 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 reveal a second layer beneath, giving the dial its distinctive depth. It was an unusual and innovative design for its time — and even today it stands out. Only very few brands, such as Panerai (then produced by Rolex), experimented with a similar layered effect during that period. The dial is further equipped with a Base 1000 outer scale, a telemeter inner scale, a beautifully scripted “antimagnétique” inscription on the lower half, and two sub-registers for the chronograph. All of this is housed in an 18k yellow gold snap-back case fitted with the squared pushers typical of the era. The watch comes on the photographed leather strap and features an exceptionally rare 18k yellow gold pin buckle — a true gem in its own right. Both the case and the movement carry matching numbers, exactly as they should on authentic examples of this reference. The iconic yellow-gilded 13ZN movement has been fully serviced by our watchmaker and is running beautifully. Specifications: Longines 13ZN Chronograph 37 mm 18k yellow gold case 5369xxx case serial & identical movement number, dating to the 1930’s cream dial with multi scales , no lumed , bi- compax sub dials lay out Sandwich cut -out Arabic numerals Triple signed (case, movement & dial) Longines hand-wound movement cal.13ZN Comes on the shown leather strap, with rare Longines 18 k yellow gold pin buckle Fully serviced by our watchmaker One-year mechanical warranty Free FedEx International Priority Shipping