Omega Seamaster Aqua Terra 41mm “Spectre”
Model: Omega Seamaster Aqua Terra 150M Master Co-Axial 231.10.42.21.03.003 “Spectre” (2021 Warranty Card)
Overview:
The Omega Seamaster Aqua Terra ref. 231.10.42.21.03.003 is a distinctive blue-dial variant of Omega's versatile sports and dress watch collection, often referred to by collectors as the “Spectre” Aqua Terra.
Featuring a rich blue vertical teak-pattern dial, applied hour markers and a stainless steel case and bracelet, this reference offers a particularly balanced interpretation of the Aqua Terra design.
This example is accompanied by warranty cards dated 2021 and has recently been serviced, currently running at approximately ±2 seconds per day.
History:
Introduced during the mid-2010s, this generation of the Aqua Terra incorporated Omega's anti-magnetic Master Co-Axial technology while retaining the vertical teak dial pattern associated with earlier models.
The Aqua Terra collection was originally introduced in 2002 as a more versatile member of the Seamaster family, combining the refinement of a traditional dress watch with the water resistance and durability expected of a sports watch.
This particular reference features what I consider one of the most balanced dial designs in the Aqua Terra collection. The blue is neither excessively dark nor overly bright, while the vertical teak pattern provides texture without overwhelming the otherwise clean layout.
There is certainly an argument for this being one of the finest-looking 41mm-class Aqua Terra references Omega has produced.
Specifications and Condition:
Overall: Great condition with minor signs of wear
Reference: 231.10.42.21.03.003
Warranty: Original cards dated 2021
Case: Stainless steel case in great condition, showing only minor wear
Dial: Blue vertical teak-pattern dial in excellent condition
Crystal: Sapphire crystal in clean condition
Movement: Recently serviced and running well, averaging approximately ±2 seconds per day
Bracelet: Original stainless steel bracelet, currently fitting approximately 18.3cm
Includes: Original warranty cards, manual, genuine Omega red presentation box and outer box
Box note: The included red Omega presentation box is genuine, although it may not be the original box configuration supplied with this reference in 2021.
Movement:
Omega Caliber 8500 Master Co-Axial automatic movement
Co-Axial escapement with silicon balance spring
Anti-magnetic resistance exceeding 15,000 gauss
60-hour power reserve
25,200 vibrations per hour (3.5 Hz)
Exhibition caseback displaying the movement and Omega's decorative finishing
The Caliber 8500 family represents an important development in Omega's modern mechanical watchmaking. Its Co-Axial escapement, based on George Daniels' design, reduces sliding friction compared with a conventional Swiss lever escapement.
The Master Co-Axial version also incorporates anti-magnetic movement components, allowing the watch to withstand magnetic fields exceeding 15,000 gauss without relying on a conventional soft-iron inner case.
This construction allows the movement to remain visible through the sapphire exhibition caseback while providing substantial resistance to magnetic interference.
Dimensions:
41.5mm diameter
Approximately 48mm lug-to-lug
Approximately 13mm thickness
20mm lug width
150m water resistance