The Omega Speedmaster, a name synonymous with lunar exploration and horological excellence, boasts a rich and diverse lineage. While the manually wound movements of the early Speedmasters hold a special place in the hearts of collectors, the brand also embraced automatic chronographs, leveraging the robust and versatile ETA/Valjoux 7750 movement as a foundation. This article focuses on Omega's adaptation of this iconic movement: the caliber 1152, exploring its specifications, variations, the watches it powered, and its place within the broader Omega Speedmaster family.
Omega 1152 Movements: A Refined Automatic Chronograph
The Omega caliber 1152 is essentially Omega's in-house modified version of the ETA/Valjoux 7750, a highly regarded automatic chronograph movement known for its reliability and relatively low cost of production. While sharing the fundamental architecture of the 7750 – a column-wheel chronograph mechanism with a date complication – the 1152 incorporates several key modifications reflecting Omega's quality standards and design philosophy. These modifications often included enhanced finishing, adjustments to the regulating system for improved accuracy, and the incorporation of Omega's branding and specific aesthetic details. The resulting movement offered a blend of robust functionality and the refined elegance expected of an Omega timepiece.
Detailed Specifications of the Omega Caliber 1152:
* Type: Automatic Chronograph
* Base Movement: ETA/Valjoux 7750
* Jewels: 27
* Frequency: 28,800 vibrations per hour (4 Hz)
* Power Reserve: Approximately 44 hours
* Functions: Hours, minutes, seconds, chronograph (seconds, minutes, hours), date
* Complications: Date
While precise differences between the 1152 and the 7750 are not always publicly documented in detail by Omega, the key distinction lies in the finishing, regulation, and potentially minor modifications to improve longevity and performance. Omega's rigorous testing and quality control procedures ensured a higher level of consistency and reliability than the standard ETA/Valjoux 7750. The increased cost of an Omega watch featuring the 1152 reflected not only the movement itself but also the overall superior quality and craftsmanship of the complete timepiece.
Images of the Omega Caliber 1152:
(Unfortunately, as an AI, I cannot display images directly. However, a thorough online search using terms like "Omega caliber 1152 movement" will yield numerous high-resolution images showcasing the movement's intricate details, including the rotor, bridges, and chronograph mechanism. Pay attention to the Omega branding visible on the components.)
Omega 1152 Watch Models: A Selection of Timepieces
The Omega caliber 1152 powered a range of Speedmaster models, primarily those incorporating a date function, distinguishing them from the more purist, date-less models using other movements. Pinpointing every single model is a challenging task, as Omega's production records are not always publicly accessible in granular detail. However, some key examples include:
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