Omega Speedmaster Professional Moonwatch Models

The Omega Speedmaster Professional Moonwatch is one of the most iconic timepieces in the history of horology. Known for its rich heritage and legendary performance, this watch has been a symbol of precision and adventure. This article delves into the various models of the Omega Speedmaster Professional Moonwatch, exploring their unique features, historical significance, and evolution over time.

Origins and Historical Context

The Omega Speedmaster Professional Moonwatch made its debut in 1957. Originally designed for motorsport and aviation, the Speedmaster quickly gained recognition for its reliability and accuracy. Its most significant claim to fame came in 1969 when NASA chose it as the official watch for the Apollo missions, including the historic Apollo 11 moon landing. This milestone established the Speedmaster as the "Moonwatch," a title it holds to this day.

Key Models and Their Features

1. First Generation (1957-1963)

The initial Speedmaster models, often referred to as the "Broad Arrow" models, were characterized by their tachymetric scales and manually wound chronograph movements. These early models had a 38mm stainless steel case and featured a distinctive "Broad Arrow" hour hand.

Notable Models:

• CK2915: Introduced in 1957, this model was the first Speedmaster and featured a black dial with a tachymetric scale on the bezel.
• CK2998: Released in 1959, this model featured a revised bezel and a different arrangement of sub-dials.

2. Second Generation (1964-1969)

This era saw the introduction of the "Professional" designation and changes to the movement and design. The most notable change was the use of the Caliber 321 movement, which provided improved accuracy and durability.

Notable Models:

• ST105.003: Released in 1964, this model was the first to carry the "Professional" designation on the dial.
• ST105.012: Known for its use in the Apollo missions, this model featured a more robust case design and improved chronograph functionality.

3. Third Generation (1969-1980)

Post-Apollo era models saw further refinements, including the introduction of the Caliber 861 movement, which was more robust and required less maintenance.

Notable Models:

• ST145.022: Released in 1969, this model became synonymous with the Speedmaster's association with space exploration.
• ST145.022-69: Produced during the transitional period of the late 1960s, it had a different caseback engraving compared to earlier models.

4. Modern Era (1980-Present)

The modern era of the Speedmaster Professional Moonwatch has seen a variety of updates while maintaining the essence of its historic design. Key changes include the introduction of new movements, updated materials, and limited edition models.

Notable Models:

• ST3570.50: Introduced in 2003, this model featured a hesalite crystal and a caseback commemorating the 30th anniversary of the moon landing.
• ST311.30.42.30.01.006: The 2011 model celebrated the 50th anniversary of the Speedmaster and included several design enhancements, such as a ceramic bezel and an updated movement.

Detailed Comparison Table

Model	Case Diameter	Movement	Key Features	Production Years
CK2915	38mm	Caliber 321	Broad Arrow hands, Tachymetric bezel	1957-1959
ST105.003	39mm	Caliber 321	Professional designation, updated sub-dials	1964-1965
ST145.022	42mm	Caliber 861	Moonwatch association, robust design	1969-1980
ST3570.50	42mm	Caliber 1861	30th anniversary, hesalite crystal	2003-2012
ST311.30.42.30.01.006	42mm	Caliber 1861	50th anniversary, ceramic bezel	2011-Present

Conclusion

The Omega Speedmaster Professional Moonwatch remains a timeless symbol of precision and adventure. From its origins in the 1950s to its current status as a modern classic, each model has contributed to its legendary reputation. Collectors and enthusiasts alike continue to admire the Speedmaster for its historical significance, technical excellence, and its undeniable connection to space exploration.