Pryngeps 100M, Ref. 2491.W.10, Cal. ETA 2789, Diving Vintage Watch

Vintage Pryngeps 100M Diving Watch from 1972, a Men’s Automatic with Swiss ETA 2789 caliber, green sunburst dial and red/black 24h bezel—an iconic diver for sale combining day-date functionality and timeless 1970s style.

Pryngeps 100M 1972 — First impression - Ref. 2491.W.10

The Pryngeps 100M Ref. 2491.W.10 captures the bold spirit of 1970s dive watches. Its vivid green sunburst dial catches the light with stunning depth, complemented by polished applied hour markers and a dual-tone red/black 24h bezel that has faded beautifully with age. The case measures around 38–39 mm, offering presence without feeling bulky, while the tall acrylic crystal creates that warm vintage distortion collectors love. Day-date at 3 o’clock enhances practicality, and the watch’s 100-meter rating underlines its tool-watch pedigree. This is an authentic, Swiss-made automatic diver ready for the wrist or display case.

Pryngeps 100M - Green Sunburst Dial

The dial is a rich green with a sunburst finish that radiates from the center, shifting in hue under different angles. Polished rectangular hour markers with tritium dots offer legibility in low light, and a fine minute track encircles the dial. Day and date sit in a framed window at 3, with Spanish day wheel adding charm and rarity for collectors.

100M Ref. 2491.W.10 - Hands

Wide baton hands are filled with luminous material, paired with a slim central seconds hand featuring a lume block for at-a-glance readability. This hand set balances sportiness and clarity, staying true to the diver’s purpose.

Pryngeps 100M Ref. 2491.W.10 - Faded Red/Black Bezel Stainless Steel Case

The stainless steel case is a classic 1970s skin diver design with twisted lugs, brushed top surfaces, and polished flanks. The bidirectional 24-hour bezel, now with a charming faded red upper half, frames the dial and adds GMT-style capability. Its patina tells the story of decades of use while enhancing its collectibility.

100M Ref. 2491.W.10 - Crown

A large, coin-edge crown at 3 o’clock is easy to operate and blends with the utilitarian aesthetic. Though unsigned, it is period-correct and functional, offering straightforward time and date setting.

Pryngeps 100M NATO Strap

The watch is fitted with a black NATO strap, adding military flair and excellent wearability. It suits a variety of wrist sizes and can be easily swapped for a steel bracelet or tropic strap for period correctness.

Pryngeps 100M 1972 — ETA 2789 Automatic Movement

Inside beats the reliable Swiss ETA 2789 automatic caliber, operating at 21,600 vibrations per hour with quickset date and hacking seconds—ideal for precise synchronization. Known for its robustness and ease of service, this movement represents a highlight of 1970s Swiss watch engineering. The Incabloc shock protection ensures durability, making it a trustworthy companion even decades later. Properly serviced, the ETA 2789 delivers excellent accuracy and longevity.

Pryngeps 100M 1972 — Wearing Experience and Dimensions

With a diameter close to 39 mm, the Pryngeps 100M wears with presence but remains comfortable thanks to its slim case profile and light weight. The curved lugs hug the wrist, and the domed acrylic crystal creates vintage charm while keeping reflections low. The bezel’s tactile action and visible aging add emotional resonance, reminding you this watch has lived a life.

Pryngeps 100M 1972 — Heritage of the Pryngeps Divers in 1970s Swiss Watchmaking

Pryngeps was one of several Swiss manufacturers delivering professional and recreational divers during the golden era of tool watches. The 100M series reflected the trend toward bold colors and rotating bezels that could track elapsed or dual time. Combined with automatic calibers and improved water resistance, these watches became favorites of sportsmen and adventurers. This example embodies that heritage with its vivid dial, functional bezel and mechanical reliability—an archetype of 1970s Swiss diving horology.

Pryngeps 100M 1972 — Condition, Originality, Warranty & Shipping

This watch remains in honest vintage condition, with a well-preserved green dial, matching lume, and naturally faded bezel insert. The acrylic crystal shows light marks consistent with age, easily polished if desired. Crown, dial, and bezel appear original to the watch, while the strap is a later replacement. Offered fully operational, with optional servicing available on request. We provide worldwide shipping and warranty for peace of mind.

See more in our curated collection of 1970s diving watches with Swiss automatic movements or explore all vintage timepieces currently available in our store.