Omega Seamaster Automatic Ref. 166.0120 (1972) – German Day-Date & Classic Vintage Charm

The Omega Seamaster Automatic Reference 166.0120 from 1972 is a particularly attractive vintage watch featuring one of the most coveted complications of that era: the German Day-Date display.

This particular example was professionally serviced in July 2026 and is in good overall condition. The combination of its classic grey dial, robust stainless steel case, and the rare German day and date display makes this Seamaster an interesting choice for collectors and enthusiasts of historical Omega models.

An elegant and suitable-for-everyday-wear vintage watch with true history, ready to be worn for many more years.

Case & Design

The 34 mm stainless steel case embodies the typical Seamaster aesthetic of the early 1970s.

The balanced proportions and classic design make this reference a versatile vintage watch that can be worn elegantly or sporty.

The case has been professionally reconditioned and is in good condition.

Dial & Day-Date Display

The grey dial gives this Seamaster a particularly elegant and understated appearance.

The highlight is the German Day-Date display, a rarer version that is highly valued by collectors for its regional specificity. The combination of the day display in German and the date function makes this model an exceptional variant within the Seamaster collection.

Movement

Inside, the proven Omega Caliber 1022 is at work, a reliable automatic movement with quick-setting for the day and date display.

Technical specifications:

• Automatic movement
• Power reserve: approx. 42 hours
• Accuracy: +5 seconds per day
• Amplitude: 274°
• Beat error: 0.1 ms

Work performed:

• Movement cleaned and oiled
• Movement regulated
• Professionally cleaned and inspected

The movement shows very good timekeeping values and operates reliably.

Crystal & Strap

The watch has been fitted with a new acrylic crystal, which is in like-new condition.

A new leather strap complements the classic look and accentuates the elegant character of this vintage Seamaster.

Work Performed

The following work has been carried out:

• Movement cleaned and oiled
• Movement regulated
• Professionally cleaned and inspected
• Case high-gloss polished
• Case professionally reconditioned
• New leather strap fitted
• New crystal installed

Scope of Delivery

The scope of delivery includes:

• The watch
• Transport box
• In-house certificate of authenticity

Conclusion

The Omega Seamaster Automatic Ref. 166.0120 is a charming vintage watch with a particularly interesting feature set. The rare German Day-Date display, the classic grey dial, and the reliable Caliber 1022 make this model an attractive addition to any Omega collection.

An authentic vintage classic from 1972 – elegant, full of character, and ready for daily use.