Case #381 — Omega Seamaster Aqua Terra 38.5MM MOP Dial with Diamonds Ref. 231.10.39.21.55.002

Case #381 — Omega Seamaster Aqua Terra 38.5MM MOP Dial with Diamonds Ref. 231.10.39.21.55.002

Status: Active Investigation
Condition: Excellent Pre-Owned
Scope: Box, Papers, and Cards
Year: 2023

🔎 Case Notes

The Omega Seamaster Aqua Terra Ref. 231.10.39.21.55.002 is one of the more elegant expressions of the Aqua Terra line — a watch that blends the sport-watch capability of the Seamaster family with a more refined and jewelry-forward presentation. At 38.5mm, it wears with strong versatility, and the mother-of-pearl dial with diamond hour markers gives the watch a brighter, more elevated look than the standard teak-dial configurations. The reference is built around a 38.5mm steel case, automatic calibre 8500, sapphire crystal, and 150 meters of water resistance.

What makes this reference especially appealing is the balance it strikes. It still carries the underlying Aqua Terra identity — a sporty, highly wearable Seamaster with real daily utility — but the dial treatment gives it a softer and more luxurious tone. It feels equally suited to everyday wear or more polished settings, which is exactly the kind of flexibility that makes the Aqua Terra line so strong.

This example dates to 2023 and is presented in excellent pre-owned condition. Overall, it shows only light wear consistent with careful use. It includes box, papers, and cards and is currently sized to fit approximately a 7-inch wrist.

🕰️ The Evidence

Reference: 231.10.39.21.55.002
Model: Omega Seamaster Aqua Terra 38.5MM MOP Dial with Diamonds
Case: Stainless Steel
Case Size: 38.5 mm
Bezel: Smooth Steel Bezel
Crystal: Sapphire Crystal
Dial: White Mother-of-Pearl with Diamond Hour Markers
Movement: Omega Calibre 8500 Automatic
Bracelet: Stainless Steel Bracelet
Bracelet Fit: Approximately 7" wrist
Water Resistance: 150 m
Year: 2023
Accessories: Box, Papers, and Cards

Condition Notes: Excellent pre-owned condition overall, with light wear consistent with careful use.

🌊 Aqua Terra Heritage

The Aqua Terra has long filled an important role within the Seamaster family because it offers the technical credibility of a modern Omega sports watch in a format that feels more refined and less overtly tool-driven. The clean case architecture, polished details, and balanced proportions all reinforce that identity, giving the watch a distinct personality within the brand’s sport-watch lineup.

That matters because this reference is not trying to be a diver or a dress watch outright. It succeeds in the space between those categories, which is exactly what has made the Aqua Terra such a strong everyday option for so many buyers. In mother-of-pearl with diamonds, it leans further into that refined side while still keeping the underlying sport-watch foundation intact.

🌟 Collector Provenance

The appeal here is rooted in versatility and presentation. The 38.5mm size gives the watch broad wearability, while the mother-of-pearl dial and diamond markers create a more elevated and less common Aqua Terra look than the standard dial variants. The result is a watch that feels distinctive without becoming overly formal.

Examples that include box, papers, and cards remain the strongest overall presentation, and a 2023 example in excellent pre-owned condition sits in a very attractive lane for a buyer looking for a modern Omega with both sport-watch practicality and a more refined visual character.

🧾 From the Case File

“Recovered as a 2023 Omega Seamaster Aqua Terra 38.5MM MOP Dial with Diamonds Ref. 231.10.39.21.55.002. Box, papers, and cards. Excellent pre-owned condition overall. Sized to approximately a 7-inch wrist.”

🗝️ BST Verdict

Case #381 delivers a more elegant take on the Aqua Terra formula without losing the model’s core versatility. With its 38.5mm case, mother-of-pearl diamond dial, full set presentation, and excellent overall condition, this is a very attractive example of a refined modern Seamaster.

👉 Every case deserves a closer look.