1 in stock

Omega Automatic Bumper 2635 Original Strap

This Unpolished 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 black leather strap, and includes it’s original black leather Omega Signed strap.

1 in stock

1 in stock

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

Leather

Strap Color

Black

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

There are certain watches that just ooze character, pieces that have so much soul and lived-in charm that they transcend their mechanical nature and become something more. This Omega is, without a doubt, one of those watches. It’s a quintessential example from the brand’s post-war golden age, a time of incredible innovation and stylistic confidence. What we have here is not just a vintage Omega, but a fantastic Reference 2635 powered by an early “bumper” automatic movement, and crowned by a dial with some of the most dramatic and beautiful patina we have ever seen. It’s a true collector’s piece that stands as a testament to the beauty of a life well-lived.

In the late 1940s and early 1950s, the automatic watch was still a marvel of engineering, and Omega was at the forefront of its development. Before the advent of the full 360-degree rotor, the winding mechanism of choice was the “bumper” or hammer-winding system. Inside this watch, a weighted semi-circular rotor swings back and forth between two springs, “bumping” off them to wind the mainspring. The wearer can actually feel a gentle, reassuring nudge on the wrist as the mechanism works its magic. This Ref. 2635 would have housed one of these early bumper calibers, likely from the Cal. 3xx family, robust, reliable movements that were the foundation of Omega’s reputation for accuracy and durability that would later lead them to the moon.

This particular example from the early 1950s is a stylistic knockout. The stainless steel case measures a classic 35mm, featuring strong, thick lugs that give it a surprisingly contemporary presence on the wrist. The dial layout is absolutely iconic—a so-called “Explorer-style” configuration with applied Arabic numerals at 12, 3, 6, and 9, interspersed with sharp, applied dagger indices. This combination, paired with the original luminous dauphine handset, creates a look that is both sporty and incredibly elegant. It’s a design that is perfectly balanced and endlessly versatile. To top it off, this example comes on what appears to be a period-correct, if not original, Omega-signed leather strap, a fantastic and rare detail.

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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