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24 June 2026 - Basel Watch Auction
Provenance

Swiss owner

Produced in a limited-edition of 2000 examples to celebrate the 125th anniversary of Louis Brandt/Omega in 1973. It was the first automatic chronograph wristwatch to receive the chronometer certification. This reference was offered with either telemeter, tachometer or pulsometer graduation.
Online Catalogue 24 June 2026 - Basel Watch Auction Lot 433

Omega
“Speedy 125 Tachometer”
Ref. ST178.0002/378.0801, No. 35074106,
circa 1973

A stainless-steel automatic chronograph wristwatch with tachometer scale, date indication and 24- hour night/day indication

Case: two-body, polished and brushed, screw-down case back with embossed Speedmaster logo, inner tachometer scale graduated to 500UPH, reverse-painted on the sapphire crystal, hooded lugs, signed

Dial black with luminous baton indexes, inner Arabic five minutes indications, 1/5th second scale, subsidiary dials for the seconds and the 12- hour register, the 24 hours with night/day indication by means of an arrow on a revolving disc, 60-minute register by means of a while central so called “jet” hand, aperture for the date, luminous white “baton” hands, signed

Movement: automatic, certified chronometer, caliber 1041, signed

Buckle/Clasp: stainless steel integrated bracelet with déployant clasp, signed

Dimensions: 51 x 45 mm

Bracelet length: 170 mm

Estimate

*CHF 1'500 – 2'500

Sold for

*CHF 2'973

Provenance

Swiss owner

Produced in a limited-edition of 2000 examples to celebrate the 125th anniversary of Louis Brandt/Omega in 1973. It was the first automatic chronograph wristwatch to receive the chronometer certification. This reference was offered with either telemeter, tachometer or pulsometer graduation.

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