166.077, Prototype · 166.077, COMEX Janus Prototype (Blue Dial, Red Locking Nut)

Seamaster PloProf 166.077 — 166.077, Prototype · 166.077, COMEX Janus Prototype (Blue Dial, Red Locking Nut)

1968

Assembled by Omega's prototype department in late 1968 for COMEX's Janus dives: deep blue dial without depth rating or “Professional”, and a red crown locking nut (patented October 1968) later replaced by steel; movement 00'066'584 in Uranus steel. Matches COMEX founder Henri Delauze's own prototype.

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Identifying details

COMEX issue
Issued to the French diving company COMEX.
Monobloc case
One-piece case without a removable caseback; the movement loads from the front.
Bezel lock
Rotating bezel that only turns while a lock button is pressed.

Variants of 166.077

Reference overview →

Switch between variants of this reference. The current variant is highlighted.
Variant	Production
166.077, Prototype	1968–c. 1970
166.077, Prototype · 166.077, COMEX Janus Prototype (Blue Dial, Red Locking Nut)Current	1968
166.077, Prototype · 166.077, R&D Prototype with Caliber 1001	1970
166.077, Prototype · 166.077, Titanium Prototype	Undated

Case & movement

Reference: 166.077
Production: 1968
Case material: Stainless steel
Case size: 45 × 54 mm
Water resistance: 600 m
Crystal: Chemically hardened mineral glass
Movement: Automatic
Date: Yes

Dial, bezel & hands

Dial colour

Seamaster PloProf 166.077 — 166.077, Prototype · 166.077, COMEX Janus Prototype (Blue Dial, Red Locking Nut)

Identifying details

Variants of 166.077

Case & movement

Dial, bezel & hands

Suggest a correction

Suggest a correction

Seamaster PloProf 166.077 — 166.077, Prototype · 166.077, COMEX Janus Prototype (Blue Dial, Red Locking Nut)

Identifying details

Variants of 166.077

Case & movement

Dial, bezel & hands