39.583.xxx is a very nice example of the reference ST 186.0004 from February 1979, originally delivered in Belgium.
It is fitted with the caliber 1620 (as indicated on the disk wearing also the serial number), and with its original and conform stainless steel Omega bracelet.
It is in overall very good condition. The batteries have been changed recently, and it works perfectly.
It is provided with the original user manual and also a nice and very rare brochure from this period presenting the complete generation of quartz Speedmaster models.
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39.583.xxx is a very nice example of the reference ST 186.0004 from February 1979, originally delivered in Belgium.
It is fitted with the caliber 1620 (as indicated on the disk wearing also the serial number), and with its original and conform stainless steel Omega bracelet.
It is in overall very good condition. The batteries have been changed recently, and it works perfectly.
It is provided with the original user manual and also a nice and very rare brochure from this period presenting the complete generation of quartz Speedmaster models.
In the second half of the 1970s, Omega embarked on the quartz revolution and even decided to fit some Speedmaster models with the LCD calibre 1620 quartz movement.
In 1977, Omega unveiled the Speedmaster Professional LCD, reference ST 186.0004. The display window has the following functions: time (12 or 24 hours), date/day, and chronograph. In addition, pressing the central pusher illuminates the screen.
In 1978, a modified version without the light function, replaced by tritium tubes (caliber 1621), was developed under the name Project Alaska IV and offered to NASA for Shuttle missions. The latter tested them in training but also aboard the Shuttle, but in the end, the Moonwatch remained the best choice.
In 1848, Louis Brandt founded a company in La Chaux-de-Fonds which would become Omega. In the 1880s, the Louis Brandt & Fils company moved to its current site in Bienne and in 1894 the caliber Omega was created, which would give its name to the company. Renowned for its precise, innovative and affordable watches, it became the largest supplier of watches to the British Army during World War II. It also became the first company to time the Olympic Games in 1932. Among its range of numerous professional watches, the Speedmaster became the first watch worn on the moon in 1969.
The purpose of this document is to determine whether the constituent parts of the watch are conform to the model reference /period or not, and to value their condition and importance.
All the watches are provided with a digital certificate (the Watchfid-ID), that will be uploaded on your protected and anonymous digital wallet.
This document presents each watch in the most objective and detailed manner possible, thanks to a substantiated analysis, high-resolution photos designed to highlight all elements of the watch and an innovative rating system. Available in printed and digital versions.
On request and when available, an extract of the archives from the manufacturer can be obtained.
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