• Omega Seamaster 600 Ploprof MKI, ref. 166.077, 1971, photo 1 of 14
  • Omega Seamaster 600 Ploprof MKI, ref. 166.077, 1971, photo 2 of 14
  • Omega Seamaster 600 Ploprof MKI, ref. 166.077, 1971, photo 3 of 14
  • Omega Seamaster 600 Ploprof MKI, ref. 166.077, 1971, photo 4 of 14
  • Omega Seamaster 600 Ploprof MKI, ref. 166.077, 1971, photo 5 of 14
  • Omega Seamaster 600 Ploprof MKI, ref. 166.077, 1971, photo 6 of 14
  • Omega Seamaster 600 Ploprof MKI, ref. 166.077, 1971, photo 7 of 14
  • Omega Seamaster 600 Ploprof MKI, ref. 166.077, 1971, photo 8 of 14
  • Omega Seamaster 600 Ploprof MKI, ref. 166.077, 1971, photo 9 of 14
  • Omega Seamaster 600 Ploprof MKI, ref. 166.077, 1971, photo 10 of 14
  • Omega Seamaster 600 Ploprof MKI, ref. 166.077, 1971, photo 11 of 14
  • Omega Seamaster 600 Ploprof MKI, ref. 166.077, 1971, photo 12 of 14
  • Omega Seamaster 600 Ploprof MKI, ref. 166.077, 1971, photo 13 of 14
  • Omega Seamaster 600 Ploprof MKI, ref. 166.077, 1971, photo 14 of 14
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Omega

Omega Seamaster 600 Ploprof MKI

Omega Seamaster 600 Ploprof MKI

NOT AVAILABLE

Brand: Omega
Typology: Vintage diver watch
Year: 1971

The Omega Seamaster 600 “PloProf” wasn’t designed for the general public — it was engineered as a weapon for saturation divers. Born from Omega’s partnership with COMEX in the late 60s, the first-series PloProf Ref. 166.077 was a radical answer to a brutal problem: create a watch that could survive depths and pressures that destroyed anything else on the market. Omega didn’t iterate; they over-built. A monobloc case machined from a single block of steel, a locking bezel system, and a visual identity so extreme that it instantly became the icon of professional dive design.

This early 1971 example has all the traits connoisseurs chase. The MK1 ( second execution) dial with its correct typography and tritium plots; the MK1 Bakelite bezel with the original locking system; and the first-type case, instantly identifiable by the absence of crown cutouts — pure, uncompromised early production architecture. The Caliber 1002 powers the piece with the reliability expected from Omega’s golden mechanical era. Paired with the proper steel 1162/162 band, the watch remains unapologetically tool-focused yet visually explosive.

A first-series PloProf is not a dive watch. It’s a statement of intent — a reminder of when brands innovated under pressure, not marketing.

 

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Specifics

  • General info

    • Reference: 166.077
    • Case material: Steel
    • Glass: Mineral
    • Caseback: Screw-back
    • Case diameter: 55.0 mm
    • Bezel Materials: Steel - Bakelite
    • Dial color: Blue
    • Dial numerals: No numerals
    • General conditions: Great conditions
    • Water resistance rate: Not waterproof
    • Delivery contents: Watch only

  • Band or Strap

    • Band material: Metallic bracelet
    • Lug width: 20 mm
    • Buckle type: Deployant
    • Buckle material: Steel

  • Movement

    • Calibre: Omega 1002
    • Movement type: Automatic
    • Complications: Date

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