This is not just any vintage diver — it is the Heuer 844 Mark 1, the very first dedicated dive watch produced by Heuer and a landmark model from the pre‑TAG era. Introduced around 1979, it played a key role in Heuer’s resurgence following the quartz crisis, marking the brand’s entry into the professional dive watch market.

This Mark 1 example is especially appealing thanks to its originality, strong condition and the presence of many correct period features.

Key Details

• Model: Heuer 844 Mark 1
• Year: c.1979
• Case Size: 42mm
• Case Material: Stainless steel (G. Monnin, French made)
• Dial: Original Mark 1 dial with cream patina
• Hour Markers: Luminous with even ageing
• Inner Scale: Red 24‑hour track
• Hands: Original sword hands
• Crystal: Acrylic or mineral (period correct)
• Movement: Swiss ETA‑based automatic
• Bezel: Original bidirectional dive bezel
• Crown: Heuer‑signed service replacement
• Bracelet: Original stainless steel bracelet
• Wrist Size: Fits up to approx. 18cm (spare links included)
• Water Resistance: Originally rated to 200m (not tested due to age)

Condition Report

Case: Unpolished with light wear, retaining strong original edges.
Dial: Original and in excellent condition with uniform patina across the markers.
Hands: Original and matching the dial tone well.
Bezel: Original, fully functional with light wear only.
Crystal: Clear with light age‑related wear.
Bracelet: Full length with vintage clasp, in good condition.
Crown: Service replacement, correctly signed.
Overall: A very strong and largely original example.

Working Order

Automatic movement running well and performing as expected.
Chronometric performance consistent with a well‑maintained vintage diver.

Our View

The Heuer 844 Mark 1 is not simply a vintage dive watch — it is a foundational model in Heuer’s tool watch history. Produced during a challenging era, it represents the brand’s pivot into professional divers and laid the groundwork for future TAG Heuer dive watches.

Examples like this, retaining original dial, hands, bezel and bracelet, are becoming increasingly difficult to source — particularly Mark 1 variants with correct dial details such as the absence of country markings. The G. Monnin case adds another layer of collectability, reflecting a short but fascinating collaboration period.

For collectors, this is a serious piece: historically significant, increasingly rare, and highly wearable at 42mm. A standout addition to any vintage Heuer or dive watch collection.