Description:
The nickname “Sommatore”, meaning “adder” or “totalizer” in Italian, was given to the model by Italian collectors due to its particularly innovative chronograph display. Unlike traditional chronographs of the era, where elapsed minutes were indicated through a small subsidiary register, the Sommatore featured centrally displayed chronograph indications, allowing elapsed timing to be read in a much clearer and more immediate way. This unusual system gave the watch a highly technical and instrumental character, making it one of the most distinctive Longines chronographs ever produced.
At the heart of the watch lies the legendary manually wound caliber 13ZN, considered by many collectors to be one of the greatest chronograph movements ever produced. Equipped with the sophisticated flyback function, developed for aviation and professional timing applications, the movement perfectly showcases Longines’ technical innovation during the golden age of chronograph production.
The present example stands out for its particularly attractive and sporty configuration. The large stainless steel case with stepped bezel and round chronograph pushers is paired with a beautiful silvered dial featuring Arabic numerals, outer minute track and elegantly proportioned subsidiary registers.