Omega Ranchero Seamaster Ref. 2990-1
Record status
Individual type · partial
Period
1959
Maker / issuer
OmegaThis Omega Ranchero Seamaster wristwatch, reference 2990-1, is a manual-wind timepiece dating to 1959. It features a 36mm stainless steel case and is powered by the Omega Caliber 276 manual movement.
The dial is characterized by a double-signed configuration, incorporating both the 'Ranchero' and 'Seamaster' markings. The aesthetic includes luminous radium-filled hands and applied hour markers, which exhibit patina. The dial further displays the '30mm' text, indicating the movement family, which the source notes was recognized for accuracy and durability. The watch is currently fitted with a third-party leather strap supplied by the vendor.
The movement is identified by the serial number 163xxxxx.
Evidence at a glance
- Linked sources
- 1
- Photograph views
- 1
- Catalogue references
- 0
Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.
Technical characteristics
- Date
- 1959
- Type
- Manual-wind wristwatch
- Movement
- Omega Caliber 276
- Case Size
- 36mm
- Reference
- 2990-1
- Serial Number
- 163xxxxx
- Dial Inscription
- Ranchero Seamaster
- Maker / attribution
- Omega
Design
- Visible features
- • Triangular luminescent hour markers • Sub-seconds dial at 6 o'clock • Broad arrow-style hour hand • 36mm steel case with straight lugs
- Case and Dial Design
- The watch is housed in a 36mm stainless steel case featuring the configuration specific to the Ranchero model. It displays a clear '30mm' designation, referring to the movement caliber family used within the piece. The layout incorporates a sub-seconds register positioned at the 6 o'clock mark. Luminous radium material is applied to the hour markers and the hands, which show evidence of age-related patina. The dial layout includes prominent triangular indices at the cardinal positions and shorter markers throughout the perimeter.
- Movement and Functionality
- The timepiece is powered by the Omega Caliber 276, a manual-wind movement. This movement originates from the 30mm caliber family, which was marketed for high levels of accuracy and structural durability during its period of use. The movement is recorded with the serial number 163xxxxx. The watch functions as a time-only instrument with a dedicated seconds sub-dial. The vendor reports that the movement has been inspected and regulated by their watchmaker to ensure operational condition.
- Model History and Authenticity
- The Omega Ranchero was introduced in 1958 and produced for approximately two years. Due to this limited production window, the model is classified by the source as a rare tool watch. This specific example features the additional Seamaster signature, which is not found on all Ranchero-labeled pieces. The watch is presented on a leather strap provided by the vendor.
Identification
- Reference
- 2990-1
- Serial number
- 163xxxxx
- Source note
- Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.
Catalogue references
No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.
Research required
- Research required: Patina on radium markers and hands is consistent with age but not independently verified
- Research required: The exact production volume is not specified beyond being identified as a rare short-run model