Important Modern & Vintage Timepieces

Monaco, Jul 21, 2021

LOT 237

Ref. 166.091 SC, self-winding, diver’s, centre-seconds, date, black dial; “Seamaster 120m / 400ft”; stainless steel

EUR 2,000 - 4,000

USD 2,400 - 4,800 / HKD 18,500 - 36,900

Sold: EUR 1,950

Stainless steel, self-winding, tonneau-shaped, diver’s wristwatch, water-resistant with screwed case-back, 60-minute graduated bidirectional revolving bezel with black insert for the decompression times, black colour dial with centre-seconds and one horological complication:
• Half-instantaneous date of the month (aperture at 3 o’clock)

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Grading System
Grade: A


Case: 3-8-11


Slightly scratched

Slightly worn

Movement: 3*


Overhaul recommended, at buyer's expense

Dial: 3-01


HANDS Original

Brand Omega, Bienne / Biel

Model “Seamaster”

Reference 166.091 SC

Year circa 1971

Movement No. 33 145 421

Case No. unnumbered (by Piquerez, Bassecourt / Altdorf, Bernese Jura)

Bracelet black rubber strap; stainless steel buckle

Diameter 40.7 mm. (bezel)

Caliber 1002

Dimensions 51.9 x 41.3 mm

Signature dial, case and movement


Case based on the Swiss invention patent No. 487 449, delivered on March 15, 1970 (application filed on February 24, 1967), to Ervin Piquerez, Bassecourt (Bernese Jura), for a “Procédé de fabrication d’une boîte de montre étanche et dispositif pour la mise en œuvre de ce procédé” (Method of manufacturing a water-resistant watch-case and device for carrying out this method).

*a 20% import VAT is due on the hammer price with buyer's premium, plus 150€ for termination of temporary export, at buyer's expense, only if it is delivered within the EU