Description
Sea-Dweller 126603
This is a like new, having been worn minimally and showing little more than faint handling marks if any example of the Sea-Dweller (ref. 126603), presented in 43 mm with a black dial. Listed with box: yes, papers: yes, it is offered here exactly as acquired from the original seller.
About the Sea-Dweller
The Sea-Dweller first appeared in 1967 to answer a very specific problem: helium building up inside a watch during saturation dives. Its helium escape valve and 1,220-metre depth rating made it the serious professional’s choice, a tool-watch lineage that continues in the 43mm generation. The 126603 pairs that capability with a Rolesor two-tone case in Oystersteel and yellow gold, a combination that runs through surprisingly few Sea-Dweller references.
Specifications
| Reference | 126603 |
| Case size | 43 mm |
| Dial | Black |
| Bezel | Black Ceramic |
| Bracelet / strap | Oyster |
| Movement | Calibre 3235 |
| Water resistance | 1220 metres |
| Year | 2024 |
| Condition | Like New |
| Set | Box: Yes / Papers: Yes |
| Availability | 1 in stock |
Condition & Set
Described as like new, this example is like new, having been worn minimally and showing little more than faint handling marks if any. The listing includes box: yes, papers: yes. Please review the photographs carefully; they show the actual watch being sold, and additional photos or video can usually be requested before purchase.
Buying a Sea-Dweller
Sea-Dweller references hold their market value well, and complete, correctly described examples move quickly. Before buying, confirm the reference and dial code against the photographs, check that the movement number matches the paperwork where papers are included, and compare the asking price against recent sales of the same configuration – dial colour alone can move a Sea-Dweller by thousands.
Reference 126603 with the black dial is a configuration that rarely stays listed long. Enquire now to confirm availability.











