Omega 562

The Omega 562 is one of the most respected automatic movements of the 1950s and 1960s, representing a high-grade standard for mid-level dress watches and professional instruments alike. As the 24-jewel date-equipped variant of the 560 family, the 562 earned a reputation for robustness and accuracy that endures among collectors and watchmakers. It powered iconic Omega sports watches like the Seamaster 166 models and competed for favor with the more expensive, chronometer-certified caliber 561. The movement’s engineering sophistication, combined with its production scale (estimated at approximately 5.8 million units), makes it one of the most encountered vintage Omega automatics today.

History & Development

The caliber 562 debuted in 1959 as part of Omega’s expanding lineup of 550-family automatics. It evolved directly from the earlier 560 family, which had established the foundation for Omega’s practical, reliable automatic technology. The 562 specifically added a date complication to appeal to the growing market for functional dress watches that combined everyday practicality with respectable accuracy.

The 560 series itself descended from Omega’s earlier generation of automatics like the 471 (Omega’s first full-rotor automatic with bidirectional winding). By the late 1950s, Omega had refined the design into the 550-based family, which included variants like the 551 (24 jewels, chronometer-rated), the 552 (24 jewels, anti-magnetic), and the non-date 550 (17 jewels).

Production coincided with one of Omega’s most prolific periods. The Seamaster collection, introduced in 1948, became the primary home for the 562, with references like the 166.002 (steel), 166.009, 166.010, and the 14770 SC (gold) being among the most common bearers of this movement. The caliber remained in production from 1959 through 1967, representing the height of mid-century Swiss watchmaking practicality.

The 562 was never certified as a chronometer, which is the key distinction between it and the more expensive 561. However, examples in good condition often keep excellent time and display power reserves in the 45 to 50-hour range, rivaling chronomically-certified competitors from rival manufacturers.

Technical Details

Winding System

The 562 features a full rotor automatic with bidirectional winding (360-degree rotor), which became standard across Omega’s 550 series. This design replaced the earlier unidirectional “bumper wind” systems and marked a significant efficiency leap. The rotor winds continuously as the wearer’s wrist moves in any direction, distributing wear more evenly across the winding gears compared to unidirectional systems.

The mechanism itself includes a click spring and ratchet wheel that prevent backslip. The rotor is balanced with weights distributed evenly to minimize jarring, though vintage examples may show some play or wear if the watch has seen extended service without overhaul.

Regulation Mechanism

The 562 uses a swan-neck regulator (also called a Breguet regulator), which was superior to the simpler index regulator found on lower-grade movements. This design allows fine regulation by moving the regulator fork side to side, adjusting the active length of the hairspring for rate adjustment. The swan-neck style provides finer control and reduces the likelihood of jump adjustments.

The balance wheel itself is fitted with the Incabloc shock-protection system, which provides protection against impact shocks in all directions. This was critical for practical watches that would see daily wear.

Beat Rate & Accuracy

At 19,800 vph (2.75 Hz), the 562 operates at a standard mid-century beat rate. This frequency was a sweet spot for mechanical watches: fast enough to provide reasonable chronometric performance without placing excessive demands on the hairspring or escapement. Modern Omega automatics like the 2824 operate at the same 19,800 vph.

The non-chronometer certification means the 562 is adjusted to tolerances somewhat looser than the 561 chronometer version. However, watchmakers consistently report that well-serviced examples run within 5 to 10 seconds per day, and some exceptional examples perform better. The movement’s design demonstrates excellent inherent stability.

Construction & Finishing

The movement is machined from beryllium bronze (also called glucydur bronze when referring to the balance wheel), which provides excellent wear resistance and dimensional stability. The color of this alloy gives the movement its characteristic warm copper tone, distinguishing it visually from later stainless steel movements.

The construction quality reflects Omega’s reputation during this period. The movement features applied gold indices on the balance cock, a swan-neck regulator, and carefully finished gear wheels. The jeweling is mostly concentrated in the escapement and gear train, as was standard practice. The bridges are hand-finished with subtle decorative details and engravings.

The design is practical rather than ornate; Omega prioritized function and durability over visual complexity. This philosophy made the 562 exceptionally serviceable, as the movement avoids the intricate complications that can frustrate restoration.

Notable Engineering

The date mechanism is equipped with a semi-quickset system, meaning the date advances more rapidly when advancing past the 24-hour mark (12 o’clock position). This was faster than purely non-quickset systems, though slower than modern instantaneous date wheels. Collectors should expect to change the date manually when setting the watch or after service.

The movement’s architecture allows for a relatively flat profile in the case (approximately 12 mm total watch thickness is typical), balancing power reserve with wearability.

Parts Information & Identification

Movement Serial Numbers & Dating

The caliber number and jewel count are always engraved on the main plate bridge. The format reads: “Omega Watch Co Swiss / Cal. 562 / 24 Jewels” followed by a serial number.

Serial numbers on Omega movements typically indicate manufacture year, though the system is not perfectly linear. According to Omega chronology:

• Movements produced in 1959 carry 4-digit serials in the early ranges
• By 1962, serials had extended to 8 digits
• Production continued through 1967 with increasingly higher serial numbers

Omega’s official dating tables can help narrow production year to within a year or two, but exact precision is sometimes impossible without original paperwork.

Common Replacement Parts

The 562 shares many components with the 560, 561, and 564, and with later movements in the 550 family. This compatibility is both an advantage (parts availability) and a potential source of confusion in the collector market (mismatched movements exist).

Commonly replaced or worn components:

• Mainspring and barrel: Loses elasticity over decades; replacement is standard during service
• Balance staff and hairspring: Subject to wear and breakage from impacts
• Pallet fork and escape wheel: Center point of escapement; prone to wear
• Click spring and ratchet wheel: Prevent backward rotor motion; wear affects winding efficiency
• Jewels in the pivot positions: May crack from shock impact despite Incabloc protection

eBay Parts Sourcing:

• Omega 562 movement parts on eBay
• Omega 562 balance wheel on eBay
• Omega 562 mainspring on eBay

Identification Features

How to locate the caliber number: Remove the caseback (usually snap-fit on Seamaster cases of this era). The number is engraved on the main plate bridge visible on the front of the movement.

Distinguishing 562 from 561 (chronometer version): This is the most common point of confusion. The chronometer-rated 561 carries additional text on the movement bridge reading “Adjusted to Five Positions and Temperature.” The jewel count remains 24 in both, but the 561 will show evidence of chronometer regulation (sometimes indicated by additional adjusting screws on the balance cock or lighter finishing). Many 561 watches also feature “Chronometer” printed on the dial, whereas 562 watches do not.

Distinguishing from other 550-family variants:

• 550: Non-automatic, 17 jewels (rare)
• 560: 17 jewels, automatic (notably less common than 562)
• 551: 24 jewels, chronometer-rated automatic (higher finishing, regulation marks)
• 564: 24 jewels with anti-magnetic Invar hairspring balance (rarer variant)
• 562: 24 jewels, non-chronometer automatic (the most commonly encountered)

Hand assembly markings: Some 562 examples carry a small “1” or “2” inside the Omega logo on the movement. This is not a date marker or factory mark, but rather indicates a taller hand assembly used to accommodate pie-pan style dials where the hands sit higher above the dial. This marking is often misinterpreted.

Signs of Service or Modification

Watch for:

• Bridge screws showing tool marks or damage (indicates rough servicing history)
• Jewel settings loose or obviously re-set (sign of inexperienced repair)
• Mismatched finishing on the rotor or bridges (suggests parts have been mixed or replaced from different production batches)
• Unusual wear patterns on pivot points (suggests the watch wasn’t regulated properly or went years without service)

Authentic vintage 562 movements show consistent finishing and patina. New-looking components stand out and suggest partial rebuilding.

Relationship to Seamaster Models

The 562 was the movement of choice for the mid-range Omega Seamaster line from 1959 onward. Key models include:

• Seamaster 166.002 (Steel): One of the most collected variants, produced from 1960 into the mid-1960s. The steel case and accessible pricing made it popular.
• Seamaster 166.009 (Steel, alternate variant): Similar to 166.002 with subtle dial variations.
• Seamaster 166.010: Gold-filled variant, often seen with crosshair dials and applied indices.
• Seamaster 14770 SC (Gold): 18ct gold case variant, representing the top of the Seamaster 562 line.

All Seamaster 562 watches featured the same movement, though dial variations (pie-pan, crosshair, applied indices, baton markers) and case materials differed. The 30-meter water resistance rating was typical for sports watches of this era (though collectors should treat them as splash-resistant dress watches rather than dive instruments).

Related Calibers

Collector Notes

The 562 occupies a unique position in Omega’s hierarchy: it’s capable enough to be taken seriously by enthusiasts, yet affordable enough to serve as an entry point to vintage automatic watches. This balance has made it consistently popular, and examples in good condition command respect from watchmakers.

The non-chronometer rating doesn’t diminish its appeal. Many collectors prefer the 562 to the 561 because it’s more commonly available, equally robust in practice, and more affordable. A well-serviced 562 will keep better time than many modern quartz watches, and its mechanical charm is unmatched.

Beware of “Constellation” watches labeled with the 562, as many represent reunions of separated movements and cases. The 561 was the chronometer used in Constellation watches of this period. Some examples exist of 562 movements in Constellation dials, but these should be approached with skepticism unless provenance is clear.