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OMEGA Speedmaster Mark IV Day-Date – Ref. 176.012 – Stainless Steel – Original Papers – 1979

We are proud to present this excellent Omega Speedmaster Mark IV, Reference 176.012, a watch that perfectly encapsulates the bold, technical spirit of the late 1970s. Dating to 1979, this timepiece is a standout evolution of the professional Speedmaster line, offering a unique "pilot-style" aesthetic combined with the high-functioning utility of a Day-Date complication.

Housed in a robust and distinctive 40 mm stainless steel sunburst-finished case, the Mark IV is celebrated for its integrated lugs and "shield" silhouette, a design language that defined Omega’s most daring era. Unlike the standard Moonwatch, the Ref. 176.012 features a hooded lug design that gives the watch a powerful, architectural presence on the wrist while maintaining the ergonomic comfort Omega is known for.

The matte black dial is a masterclass in functional layout, remaining in excellent condition with its original tritium markers having aged to a warm, creamy patina. This reference is distinguished by its central 60-minute chronograph hand - shaped like an airplane wing - and the intuitive Day-Date display at 3 o’clock. The subdial at 12 o’clock serves as a 24-hour indicator, allowing the wearer to distinguish between day and night at a glance, a feature that cements its status as a true tool watch.

At the heart of this Mark IV beats the Omega Caliber 1045, a legendary automatic movement based on the Lemania 5100. Renowned for its incredible durability and ability to withstand high G-forces, this caliber is a favorite among military pilots and vintage enthusiasts alike. Its vertical clutch and nylon parts - designed specifically for longevity and reduced friction - ensure that this 1979 model remains as precise and reliable as the day it was sold.

This Omega Speedmaster Mark IV is offered with:

- Original warranty papers, Germany1979

- Omega manual

- Original stainless steel bracelet with signed folding clasp

- Tachymeter scale integrated under the mineral crystal

“The Speedmaster Mark IV Ref. 176.012 is the unsung hero of the ‘Mark’ series—combining the bulletproof Lemania-based Caliber 1045 with a futuristic 70s design language. With its original papers and distinctive day-date functionality, it represents a sophisticated entry point into high-level vintage Omega collecting.”