Omega Automatic Bumper 2635 Cal. 351

This Omega, reference 2635, is powered by the Cal. 351 bumper automatic movement. The timepiece is presented in a round stainless steel case which is in excellent condition and features prominent, faceted lugs. Its white dial is appointed with applied, silver-toned, faceted dart-style indices and Arabic numerals at each hour marker. Time is indicated by a set of matching silver-toned dauphine hands for the hour, minute, and central second. The watch is fitted with a light blue suede strap.

General

Brand

reference

2635

Manufactured

Switzerland

Department

Men

Dial Color

White

Case

Case Shape

Round

Bezel

Fixed

Case Material

Stainless Steel

Case Width

33mm

Case Height

40.6mm

Strap / Bracelet

Strap Material

Suede

Strap Color

Blue

Clasp

Buckle

Lug Width

18mm

Max Wrist Size

8.5"

Movement

Movement

Automatic

Caliber

Omega 351

Accuracy

>10 seconds

The movement showed a daily accuracy deviation ranging from 0 to 10 seconds across six positions.

Extras

Original Box

No

Original Papers

No

Warranty Every watch sold by Ottuhr comes with a 1-year mechanical warranty. Select pieces may also include additional guarantees or extended coverage.

1-Year Ottuhr Warranty

Overview

In the incredible history of Omega, the early 1950s represent a true golden age. The brand was at the absolute zenith of its powers, producing millions of exceptionally high-quality timepieces that would solidify its reputation as one of the finest watch manufactures in the world. This beautiful automatic watch is a perfect, quintessential example of that celebrated era.

At the heart of this timepiece beats one of the most charming and historically significant mechanisms in all of vintage watchmaking: the “bumper” automatic movement. As Omega’s first generation of self-winding calibers, these were true pioneers. Unlike a modern rotor that spins a full 360 degrees, the oscillating weight—or hammer—on a bumper movement swings back and forth through a limited arc, gently “bumping” off two small buffer springs to wind the watch. It’s a robust and reliable system that produces a unique, tactile sensation on the wrist—a subtle bump that is a direct, tangible connection to a pivotal moment in horological history.

This particular example, a Reference 2635 powered by the excellent Caliber 351, dates to circa 1952 and is a stunning expression of mid-century design. The silvered dial has aged beautifully and features a classic and highly desirable “quadrant” layout, with a handsome mix of applied, stylized Arabic numerals at the poles and sharp, faceted arrowhead markers in between. It’s a perfectly balanced, legible, and timeless design. This is all housed in a classic stainless steel case with elegant, sweeping lugs that give the watch a fantastic presence on the wrist.

Timing: The watch has been measured with a timegrapher at six different positions. The rate, amplitude, and beat error are within acceptable ranges.

Functions: All functions including the crown winding, time setting, etc are working as expected.

Integrity: The movement shows no signs of damage, rust, or corrosion, with all components appearing clean and well-maintained.

Authenticity: Each timepiece is evaluated and authenticated in-house. This watch is guaranteed to be correct to its manufacturer and time period.

Warranty: This timepiece includes a 1-year mechanical warranty, activated upon the date of purchase. 

Shipping: This timepeice includes complimentary insured shipping within all 50 states. 

Returns: If, for any reason, you are not entirely satisfied with your purchase, you may return the product for a full refund within 30 days from the date you received or signed for the item.

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