**Brand:** Omega  **Reference:** 2511.83 **Year:** 1998 **Material:** Stainless steel  **Case Diameter:** 36mm **Strap Size:** 18 mm **Crystal:** Sapphire  **Caliber:** Caliber 1538 quartz precision movement with rhodium plated finish **Strap:** Stamped steel 1501 bracelet with 823 endlinks **Box/Papers:** No **Price:** $1000 shipped or best offer **Shipping:** FedEx International Priority with shipping and tariffs covered **Payment:** Wise, PayPal F&F (any fees borne by buyer) ***Worth Reading*** The reference 2511.83 presents a quieter interpretation of the Seamaster, defined by clarity of design rather than overt sport intent. Produced for the Japanese market and seldom seen outside Asia, this reference is distinguished by a 6-9-12 dial configuration, a design choice that departs from the assertive dive watch language typically associated with the Seamaster line. The case in stainless steel is classically proportioned at 36 mm and is highly versatile on the wrist. The signature twisted lyre lugs introduce a subtle sculptural quality, lending a sense of faceted refinement to the case profile without visual excess.  On the wrist, the 2511.83 occupies a space between categories. Its understated design allows it to move easily between casual and more formal settings, avoiding the visual weight of contemporary dive watches. Discontinued and uncommon, this Japan exclusive Seamaster 120M rewards those drawn to nuance rather than the conventional. An understated Omega, best appreciated by the observant. Now available.  ***Condition Report*** This Seamaster 120M is in good, unpolished condition. There are wear marks which is consistent with a watch of its age. The sunburst blue dial is pristine with no blemishes. The sapphire crystal is flawless.  The signed crown screws down tight. The movement is powered by the quartz Caliber 1538 with a battery life of 48 months. The battery was replaced in December 2025 and the movement is keeping perfect time. The original signed steel 1510 bracelet with 823 endlinks fits a 6.5” wrist at maximum.  The watch will be shipped in a travel coffin.  For a peace of mind, interested buyers are encouraged to reach out for a FaceTime call or request for a custom timestamp. Thanks for looking and have a good day!