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Zodiac is one of those names that serious collectors know commands far more respect than its current market position might suggest. Founded in 1882 by Ariste Calame in Le Locle, Switzerland, Zodiac built its reputation on innovation and build quality that put it squarely in competition with the likes of Omega and Longines throughout the mid-twentieth century. While the brand is best remembered today for its legendary Sea Wolf dive watches, Zodiac’s dress watch catalog from the same era is, in our opinion, one of the great underappreciated corners of the vintage Swiss market. The Hermetic line represents the brand’s elegant, everyday-wear offerings, and the name itself tells you something about Zodiac’s engineering mindset: “Hermetic” denotes a hermetically sealed case construction designed for water resistance, a feature that was far from standard on dress watches of the period. It is the kind of thoughtful, practical detail that distinguished Zodiac from competitors content to prioritize aesthetics over substance.
The Caliber 70-72 powering this watch is a movement that deserves particular attention. Based on the robust AS (Adolf Schild) ébauche family, Zodiac modified and signed these movements in-house, and the result was a workhorse automatic that proved itself across the brand’s entire lineup, from refined dress pieces like this Hermetic all the way to the demanding depths of the Sea Wolf. It is a 17-jewel, full-rotor automatic with Incabloc shock protection, a date complication quickset via the 21-to-24-hour window, and approximately 40 hours of power reserve. The Zodiac-signed rotor is visible with the caseback removed, engraved with the brand’s crosshair logo alongside “Zodiac Ltd, Swiss, Seventeen 17 Jewels.” It is a beautifully finished movement that speaks to the level of care Zodiac invested in even their more accessible references.
This particular example is a stunning representative of the line. The silver sunburst dial is in fantastic condition, with the radial brushing catching light beautifully and creating that shifting, alive quality that makes sunburst dials so endlessly satisfying on the wrist. The applied gold baton indices are all present and intact, each one faceted and catching the light with precision. The Zodiac crosshair logo, the “Zodiac” script, the elegant italic “Hermetic,” and the cursive “Automatic” designation are all crisp and fully legible. The framed date window at three o’clock is clean, with sharp printing on the date disc. The “T SWISS MADE T” designation at six confirms tritium luminous material on the original gold dauphine handset, which shows honest, gentle patina consistent with age.
The gold-capped case is in remarkable condition, retaining sharp, defined lugs and a clean bezel with only the lightest signs of wear. The profile is slim and elegant, exactly the kind of proportions that make 1960s dress watches so comfortable and versatile on the wrist. The stainless steel caseback is properly signed with Zodiac’s iconic Libra scales motif, along with “Automatic,” “Antimagnetic,” “Swiss,” “Water Resistant,” and “Shockresistant” markings. The inner caseback confirms the Le Locle manufacture, stamped “Zodiac W Ltd, Le Locle, Swiss” and “Fond Acier Inoxydable” with the reference number 723 917.
To us, this is the quintessential entry point into vintage Zodiac for the collector who appreciates substance behind the name. It is a watch built by a brand that was competing at the highest levels of Swiss horology, powered by a movement robust enough for professional dive watches, yet dressed in the refined language of a proper mid-century gentleman’s timepiece. On the green leather strap, it has a warmth and sophistication that belies its accessible price point, and it wears with the quiet confidence of a watch that has absolutely nothing to prove.
