Only Online Auction

Geneva, Apr 07, 2021

LOT 99

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

CHF 1,000 - 2,000

EUR 900 - 1,800 / USD 1,060 - 2,120 / HKD 8,250 - 16,500

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

Grading System
Grade: A


Case: 3-8-11


Slightly scratched

Slightly worn

Movement: 3**


Repair required, at buyer's expense

Dial: 3-01


HANDS Original

Brand Omega

Model “Seamaster 120 m / 400 ft”

Reference 166.091

Year circa 1971

Movement No. 33 145 412

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

Material stainless steel

Bracelet black leather strap

Buckle stainless steel buckle

Diameter 40.7 mm. (bezel)

Caliber 1002

Height 51.9 mm.

Width 41 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).


The purchase price payable by a buyer will be the sum of the final bid price plus the buyer’s premium, together with any applicable sales or compensating use tax. In addition to the hammer price, the buyer’s premium is payable as follows: 25% of the hammer price on each lot.

Important notice – Special conditions Please look carefully at all the photos as they are an integral part of the description. Any defect not mentioned in the descriptions but visible on the photos will be considered as described and cannot lead to any claim. The dimensions are given as an indication and may slightly differ from the measures mentioned by the manufacturers especially for contemporary watches. The photos are not retouched. Colors may differ from reality. For timepieces, we guarantee neither the functioning nor the precision of the movement, nor the water-resistance of the case. In addition, please note that movements, parts of mechanisms or cases may be incomplete. The lots are sold “as is”, described to the best of our knowledge and cannot be returned. Once the online bid is placed by the bidder, it cannot be cancelled.