The title "1045 Rolex" is inherently misleading. There is no Rolex watch model with the reference number 1045. This number is strongly associated with the Omega Speedmaster Mark 4.5, specifically the caliber used within the watch. The confusion likely stems from a misunderstanding or misidentification in online marketplaces or discussions. This article will delve into the fascinating history and characteristics of the Omega Speedmaster Mk 4.5, caliber 1045, clarifying its identity and separating it from the unrelated Rolex brand. We'll examine its place within the Speedmaster lineage, its technical specifications, its collector appeal, and the common pitfalls of misidentification in the vintage watch market.
The Omega Speedmaster Professional is synonymous with space exploration, famously worn on the moon. However, the Speedmaster family boasts a rich and diverse history, encompassing numerous variations and evolutions over the decades. The Omega Speedmaster Mark 4.5, often referenced as the "Mk 4.5," occupies a specific niche within this lineage, holding a unique position for its design and the caliber 1045 that powers it. This model, typically referenced as ST 176.0012, represents a transitional phase in Speedmaster design, bridging the gap between earlier models and the more modern iterations.
The Omega Speedmaster Mk 4.5 (ST 176.0012) and Caliber 1045: A Detailed Look
The Omega Speedmaster Mk 4.5, produced approximately from 1983, distinguishes itself through several key features:
* Case: Typically crafted from stainless steel, the case size usually measures around 42mm, a size that reflects the changing trends in watch design during the 1980s. The case design often features slightly broader lugs compared to preceding models, contributing to its unique aesthetic.
* Dial: The dial is arguably the most defining characteristic of the Mk 4.5. It usually presents a clean and legible design, often with applied indices and baton hands. The color scheme typically involves variations of black or grey, providing excellent contrast for readability. The subdials are arranged in a tri-compax layout, a classic chronograph configuration.
* Movement: This is where the reference to "1045" becomes crucial. The heart of the Mk 4.5 is the automatic Omega caliber 1045, a robust and reliable movement known for its accuracy and durability. This caliber represents a significant step forward in Omega's chronograph technology, incorporating improvements in efficiency and precision compared to its predecessors. The caliber 1045 is a significant element contributing to the collector appeal of the Mk 4.5.
* Crystal: The crystal is typically made of acrylic, a material common in watches of this era. While less scratch-resistant than modern sapphire crystals, acrylic crystals offer a certain vintage charm and can be easily polished.
* Bracelet: The Mk 4.5 was typically fitted with an Omega-branded bracelet, often a steel link bracelet designed for comfort and durability.
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