Omega Seamaster 2501.21.00 - Automatic Co-Axial - 2003 - Just Serviced

The Omega Seamaster Aqua Terra 2501.21.00 is one of the earliest models to feature Omega's pioneering Co-Axial escapement, combining everyday versatility with refined styling and chronometer-certified mechanical performance.

Its 36.2mm stainless-steel case, crisp white wave-pattern dial, applied baton hour markers and broad-arrow hands create a clean, timeless aesthetic suited to both casual and formal wear. Powered by the Omega Calibre 2500 automatic movement, this reference represents an important chapter in Omega's transition to the Co-Axial era.

This circa 2003 example is accompanied by an Omega presentation box and booklet.

Brand: Omega
Model: Seamaster 
Reference: 2501.21.00
Year: Circa 2003

Case Size: 36.2mm
Case Material: Stainless Steel
Crystal: Sapphire Crystal
Caseback: Solid Stainless Steel with Seamaster Hippocampus Medallion
Movement: Omega Calibre 2500 Automatic Co-Axial Chronometer
Power Reserve: Approximately 48 Hours

Bracelet / Strap: Original Omega stainless steel bracelet.

Bracelet Condition: Presented on its original Omega bracelet as pictured.

Watch Condition: Presented in good overall condition with honest signs of wear consistent with age and careful use. Please see pictures or request further clarification if required.

Mechanical Condition: Fully Serviced in September 2026 by an Omega Service Agent

Service History: Full service performed by Omega Service Agent September 2026.

Included in Set: Watch, Omega presentation box and booklet.

Box Condition: Good.

Papers / Warranty Certificate: Not included.

Payment Methods:
Bank transfer. Crypto via RelayPay. Visa, Mastercard, Apple Pay and Google Pay.
A surcharge of 1.4% inc GST applies to all card payments.
A surcharge of 2.2% inc GST applies to all crypto payments.
Item will be sent when funds have cleared.

Shipping: Included. Australia wide. FedEx Express, tracked and insured to full item value.

Pickup: Adelaide. Viewings by appointment.

Notes / Disclosures:

Images may show reflections, lighting artefacts, or surface dust that can appear as marks. Any condition-related wear will be clearly described. Please contact us for clarification if unsure.

Please contact for further images, video, or to arrange a face-to-face inspection or video call.

Images are provided as a general visual reference and may not capture every minor cosmetic detail. We do our best to accurately describe each watch, however buyers are welcome to request additional images, video, or clarification prior to purchase to ensure suitability.