Case #543 — Omega Seamaster Diver 300M Ref. 210.30.42.20.03.001

Case #543 — Omega Seamaster Diver 300M Ref. 210.30.42.20.03.001

Status: Active Investigation
Condition: Excellent Pre-Owned
Scope: Box, Papers, and Cards
Year: 2021

🔎 Case Notes

The Omega Seamaster Diver 300M Ref. 210.30.42.20.03.001 presents one of Omega’s most recognizable professional dive watches in its signature blue-on-steel configuration. Its polished blue ceramic dial carries the collection’s laser-engraved wave pattern, paired with a matching ceramic bezel and the familiar skeletonized handset that has defined the Seamaster Professional for decades.

The 42mm stainless steel case gives the watch confident wrist presence, while the five-link bracelet preserves the unmistakable character of the Diver 300M. Beneath the sapphire exhibition caseback is Omega’s Co-Axial Master Chronometer Calibre 8800, combining a 55-hour power reserve with METAS-certified performance and resistance to magnetic fields reaching 15,000 gauss.

This example dates from 2021 and is presented in excellent pre-owned condition, showing only light wear consistent with careful use. It includes its box, papers, and cards and is currently sized to fit approximately a 7.75-inch wrist.

🕰️ The Evidence

Reference: 210.30.42.20.03.001
Model: Omega Seamaster Diver 300M
Case: Stainless Steel
Case Size: 42mm
Bezel: Unidirectional Blue Ceramic Bezel with White Enamel Diving Scale
Crystal: Domed Scratch-Resistant Sapphire Crystal
Dial: Polished Blue Ceramic with Laser-Engraved Waves
Movement: Omega Co-Axial Master Chronometer Calibre 8800
Power Reserve: Approximately 55 Hours
Functions: Hours, Minutes, Seconds, and Date
Bracelet: Stainless Steel Bracelet with Folding Clasp and Dive Extension
Bracelet Fit: Approximately 7.75-Inch Wrist
Water Resistance: 300 Meters / 1,000 Feet
Additional Features: Helium-Escape Valve and Sapphire Exhibition Caseback
Year: 2021
Accessories: Box, Papers, and Cards

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

🌊 Seamaster Heritage

The Seamaster Diver 300M has remained one of Omega’s defining sports watches since its introduction in 1993. Its scalloped bezel, skeletonized handset, helium-release valve, and distinctive bracelet created an identity that is immediately recognizable and deeply connected to Omega’s modern diving history.

This generation renewed the model with ceramic construction, a wave-engraved dial, an exhibition caseback, and Omega’s Master Chronometer movement technology, while preserving the features that made the original Diver 300M so distinctive.

🌟 Collector Provenance

The Ref. 210.30.42.20.03.001 occupies an important place within the modern Seamaster lineage. It restored the celebrated wave dial after the cleaner “no-wave” generation while introducing a technically advanced ceramic dial and Omega’s Calibre 8800 Master Chronometer movement.

The blue-on-steel configuration remains the clearest expression of the Seamaster Professional identity. Its ceramic surfaces provide rich depth under changing light, while the 42mm case, professional diving specifications, and highly recognizable design give it lasting appeal as both a capable sports watch and an everyday Omega.

This 2021 example is particularly attractive with its complete accompanying set, excellent overall condition, and bracelet sized generously for approximately a 7.75-inch wrist.

🧾 From the Case File

Recovered as a 2021 Omega Seamaster Diver 300M Ref. 210.30.42.20.03.001. Presented in excellent pre-owned condition with box, papers, and cards. Currently sized to fit approximately a 7.75-inch wrist.

🗝️ BST Verdict

Case #543 delivers the modern Seamaster Professional in its most iconic configuration: deep blue ceramic, stainless steel, engraved waves, and genuine professional diving capability. Its complete set, excellent condition, and versatile proportions make this a particularly strong example of Omega’s enduring Diver 300M.

👉 Every case deserves a closer look.