Longines 13.33 Single-Button Chronograph 18k Yellow Gold Dial from 1928

Founded in 1832, Longines has built a legacy on precision, elegance, and innovation. In the early 20th century, the brand pushed the limits of chronograph development — and this 1928 mono-pusher chronograph stands as a testament to that ambition. Housed in a luxurious 18k yellow gold case, this timepiece captures the refined spirit of a golden era in Swiss horology.

At the heart of the watch is the Longines caliber 13.33, one of the most sophisticated chronograph movements of its time. So refined was this caliber, that Longines eventually discontinued it around 1936, introducing the now-legendary 13ZN as its successor. The 13.33 remains revered among collectors for its early technical brilliance and artisanal finishing.

The white enamel dial is a showpiece in itself, featuring crisp black Arabic numerals and vibrant red and blue scales. The red scale reads “Calculé Par 100 Mètres De Distance,” while the blue denotes “Calculé Par 1000 Mètres De Distance” — both used for calculating speed over varying distances. It’s an aesthetic and functional marvel rarely seen outside of museum collections.

Despite its age, this piece remains in pristine overall condition, complemented by a handmade leather strap that matches the timeless elegance of the watch.

Highlights

✔ Handmade leather strap – Contemporary craftsmanship for a vintage classic

✔ Pristine overall condition – A century-old piece with preserved clarity and form

✔ Legendary 13.33 caliber – Early chronograph innovation, predecessor to the 13ZN

✔ Enamel dial with dual scales – Historical precision in red and blue accents

Specifications

Brand: Longines

Model: Mono-Pusher Chronograph

Case Material: 18k yellow gold

Dial: White enamel with red & blue tachymetric scales

Markers: Black painted Arabic numerals

Movement: Manual wind Longines cal. 13.33

Case Dimensions: 34 x 40 mm Year: 1928

Strap: Handmade leather

This Longines mono-pusher chronograph is more than a watch — it’s a window into the pioneering world of early chronograph manufacturing. With its enamel dial, legendary movement, and elegant design, this piece occupies a rarefied place in vintage horology.