A truly special and increasingly rare vintage Omega, this Seamaster 120 reference 166.088 is hard enough to find on its own — finding one complete with original box, papers and original bracelet elevates it to another level altogether. An exceptional opportunity for collectors of vintage tool watches.

Key Details

• Model: Omega Seamaster 120
• Reference: 166.088
• Case Size: 39mm
• Case Material: Stainless steel
• Caseback: Seahorse (hippocampus) emblem
• Bezel: Rotating stainless steel bezel with blue insert
• Dial: Black
• Hour Markers: Naturally aged and discoloured
• Hands: White and black hour/minute hands with sweeping blue seconds hand
• Date: At 3 o’clock
• Crystal: Acrylic
• Movement: Omega Calibre 1002 automatic
• Water Resistance: Originally rated to 120 metres (not guaranteed due to age)
• Bracelet: Original Omega stainless steel bracelet
• Clasp: Folding clasp
• Wrist Size: Fits up to approx. 18.5cm

Condition Report

Case: Honest vintage condition with noticeable scratches and marks consistent with age; deliberately left unpolished to preserve originality.
Bezel: Original blue insert with age‑appropriate wear.
Dial: Naturally aged with spidering and discolouration; full of character and originality.
Crystal: Light marks consistent with vintage use.
Bracelet: Original bracelet in good condition with normal wear for age.
Overall: A very honest, original example that has not been over‑restored or polished.

Working Order

Recently passed through our workshop.
Running at approximately +4 seconds per day.
Amplitude measured at around 197.
Operating beautifully for a vintage automatic dive watch.

Our View

The Seamaster 120 is one of Omega’s most under‑the‑radar vintage dive watches, offering serious tool‑watch credentials in a wearable 39mm case. The reference 166.088 is particularly sought after, and examples retaining their original dial, bezel, bracelet — and especially box and papers — are now extremely difficult to source.

This watch hasn’t been polished or “tidied up” to erase its history. Instead, it wears its age honestly, with a spidered dial and natural patina that collectors prize. An outstanding opportunity to add a genuinely rare Seamaster to a serious vintage collection.