The watch
Hamilton Khaki Sub 330ft Ref. 9859 | Automatic Diver | Black Dial | 1980s–1990s
Description
This Hamilton Khaki Sub Ref. 9859 is a proper military-inspired diver from the era when Hamilton leaned hard into function-first design. No nostalgia gimmicks. This was built to be worn, knocked around, and trusted.
The stainless steel tonneau case has real presence on the wrist. Broad shoulders, crown guards, and a unidirectional rotating bezel make its intent obvious. Concave lugs pull the case down onto the wrist, keeping it stable and comfortable. A screwed caseback and protected crown reinforce its tool-watch credentials.
The black dial is dense but highly legible. Large luminous Arabic numerals for the 12-hour scale sit alongside a white 24-hour track, giving it a true military-time layout. The date window is cleanly integrated, and the skeletonized luminous hands are classic Khaki Sub, functional rather than decorative. The dial text “Hamilton Automatic Khaki Sub 330ft” tells you exactly what this watch is.
Power comes from a Hamilton-signed automatic movement based on the ETA 2892-2. Slim, robust, and proven, it’s a movement chosen for reliability and long-term serviceability.
The watch is fitted with a field-style aftermarket NATO strap and buckle, perfectly in character for the model and emphasizing its military roots.
Specifications
• Brand: Hamilton
• Model: Khaki Sub
• Reference: 9859
• Year: Circa late 1980s to early 1990s
• Movement: Automatic, Hamilton-signed ETA 2892-2
• Case Material: Stainless steel
• Case Construction: Three-piece tonneau case
• Bezel: Unidirectional rotating bezel
• Dial: Black
• Numerals: Luminous Arabic 12-hour numerals with 24-hour scale
• Hands: Skeletonized luminous hands, central seconds
• Date: At 3 o’clock
• Crystal: Mineral, period-correct
• Water Resistance: Originally rated to 330 ft, not guaranteed due to age
• Strap: Field-style aftermarket NATO
• Buckle: Aftermarket
• Functions: Hours, minutes, central seconds, date, unidirectional rotating dive bezel
Condition Report
• Dial: Original black dial with strong printing and intact lume. Even aging consistent with use.
• Case: Stainless steel case showing honest wear from use. Edges and contours remain well defined.
• Bezel: Rotating bezel present with visible wear consistent with age and tool use.
• Crystal: Clear with surface marks visible under strong light.
• Movement: Automatic movement running smoothly and keeping steady time.
• Strap and Buckle: Aftermarket NATO strap and buckle in good wearable condition.
Historical Significance
The Khaki Sub line represents Hamilton’s move from military field watches into serious dive watches. The Ref. 9859 sits at the crossroads of military utility and professional dive design, pairing a modern automatic movement with a case built for real-world abuse. Original Khaki Subs from this era are increasingly appreciated for their authenticity and no-nonsense design, especially compared to later reissues.