1986 Omega Speedymoon 'Big Moon' 345.0809 Speedmaster

Surely if any chronograph deserves a moonphase complication, it’s the Moonwatch. But, like all good things, it was only introduced in the 80s. This is the ref. 345.0809, better known by collectors as the Speedymoon. Not only does it bring the most romantic of complications to the party, but it adds a date, cool flanking text at the 6 subdial like an early Saxonia, total vertical symmetry, and a wealth of strange nuances to learn. It was the most complicated Speedmaster that had been made in 1985 and it looks far prettier than the most complicated Speedmaster that’s made today.

However, it sold horribly in period. Between 85-89, fewer than 1300 examples are thought to have been made. And, of that, 15% were made as strap-only models largely for the Mexican and Italian market. So really, it’s more like 1100 bracelet 345.0809 out there

The first Speedmaster Professional model with moon phases (and date), nicknamed “Speedymoon”, was sold from the end of 1985 for three years.

The Speedymoon was neither numbered, nor officially limited, but its production remained small, with an estimation of 1’300 examples.

The moon phases and the date complications entailed a modification of the calibre 861, which was renamed 866.

This example, with serial number #46.876.xxx, is from February 1986 and has been delivered in Japan. It is in perfect condition, with its original 1447/805 steel bracelet.

Reference: 345.0809

Serial: 46,876,XXX

Year: September 17, 1986

Bracelet: 1447 clasp code paired with 805 ends - Stainless Steel

Case: 42mm - Stainless Steel

Lug Width: 20mm

Movement: Omega 866 - Manual - Serviced 05/05/2025 - One Year Warranty

Functions: HMS, Chronograph, Moon phase, date

Box and Papers: No box or papers - Extract of Archives included

Crystal: Acrylic

Bracelet size: 7.15”

Case is in great shape with light normal micro wear. Bracelet is in great shape with light micro wear. Dial and hands have minimal wear with matching patina. Crystal is in great shape. Serviced 05/05/2025 - One Year Warranty

Founded in 1848 by Louis Brandt in Switzerland, Omega has grown into one of the most respected and innovative names in watchmaking. The brand’s early focus on precision earned it accolades at international observatories and competitions, setting the stage for decades of horological achievement. Omega became the official timekeeper for the Olympic Games in 1932, and in 1969, the Speedmaster Professional—nicknamed the "Moonwatch"—made history as the first watch worn on the lunar surface during NASA’s Apollo 11 mission. Omega’s innovations continued with the introduction of the Co-Axial escapement in the late 1990s, a groundbreaking movement that dramatically reduced friction and improved long-term accuracy.

Omega’s lineup showcases a wide range of iconic models that reflect the brand’s legacy and versatility. The Seamaster, introduced in 1948, is a favorite among divers and famously worn by James Bond since 1995’s GoldenEye, blending technical capability with cinematic cool. The Speedmaster remains one of the most storied chronographs in existence, while the Constellation is known for its refined design and chronometric precision. The De Ville collection offers a more elegant, dress-focused aesthetic, often featuring high-end complications and meticulous finishing. Omega continues to lead with innovations like Master Chronometer certification, METAS testing, and antimagnetic technology—ensuring that its watches are not just beautiful, but built for the demands of modern life.