Preliminary identification
Photo reference
2 uploaded photos
Overview
This is an authentic vintage Zodiac Sea Wolf stainless steel automatic diver's watch, reference 86404, dating to the 1970s. Featuring a cushion-style tonneau steel case, date window at 3 o'clock, distinctive applied baton hour markers, a bright red seconds hand, and a bidirectional rotating steel bezel, this model is a legendary cornerstone of vintage dive watch history.
Story
Debuting alongside the Rolex Submariner and Blancpain Fifty Fathoms in 1953, the Sea Wolf became the go-to watch for U.S. service members in Vietnam, prized for its extreme durability and accessible price at military PX stores.
Maker / Origin
Founded in 1882 by Ariste Calame in Le Locle, Switzerland, Zodiac gained worldwide renown for pioneering precision tool watches and high-beat movements. The Sea Wolf line became one of the most celebrated and commercially successful civilian dive watches of the 20th century.
Condition & Value
Shows honest vintage wear consistent with age and tool-watch utility. The stainless steel case and bezel show light scuffs and minor surface scratches, the dial appears clean and intact, and the case back engravings (Ref. 86404, 20 ATMOSPHERE) remain crisp and legible.
Full Research
Sold comps, value drivers, and venue guidance pulled from recent auction results.
Your first full report is on us.
See sold comps, value drivers, and where to sell. One complimentary report, no card required.
Comparable demand stays strongest where maker, originality, and venue confidence line up. Broader examples still trade, but the range tightens quickly when provenance, condition, or selling lane fit is missing.
Best Venue
Specialty auction or a focused dealer with buyers already in this lane.
Signed example with light edge wear and original frame.
Comparable format with stronger provenance and cleaner surface.
Smaller related piece with visible craquelure and trimmed margins.
Period match with softer condition and weaker subject matter.
Close market lane comp with similar material and presentation.