White Sea-Dweller · Model 1665 · Mark 2 Variant
Rail Dial
White Sea-Dweller
The Rail Dial Configuration of the White 1665 Sea-Dweller
Overview
The 1665 dials with the “Rail” are quite rare nowadays. Rail Dials were made by the Stern Company — the same firm that produced the 600 metres COMEX 1665 dials — and only for a two-year production window: 1977–79, in the 5 million serial range.
The text style and spacing of the “Rail” is the same as used on the 600 metre COMEX dials, giving the Rail Dial a distinctive typographic kinship with one of the most coveted variants in vintage Sea-Dweller collecting.
Rail Dial 1665 — Overview
Dial Detail
Rail Dial — M. Pisani
Maker
Stern Company (same as COMEX 1665 dials)
Production Period
1977–1979
Serial Range
5.7 million – 6.2 million
Rarity
Quite rare — two-year window only
Serial 5.7M – 6.2M
Production 1977–1979
Maker Stern Co.
Distinctive Characteristics
Obviously, the alignment of the wording on the dial is lined up on a “rail” — hence the name. Six defining features set it apart from a standard White Sea-Dweller 1665:
- 1 The “C” of Chronometer lines up with the “C” of Certified on the line below — the definitive “rail” alignment.
- 2 The font of the depth markings is always in italics.
- 3 The hour markers (tritium dots) are closer to the minute track than on the regular dial.
- 4 The only version of the SD dials marked “T SWISS T <25”, shared with the COMEX 1665.
- 5 Longer minute markers than the standard White Sea-Dweller.
- 6 Serial range: 5.7 mil to 6.2 mil.
Dial Text Alignment
SUPERLATIVE
CHRONOMETER OFFICIALLY CERTIFIED
Glancing at the Rail Dial gives an instant impression of similarities to the COMEX 1665 dial. The comparison is not coincidental — both come from the same Stern Company production line.
Rail Dial vs. Normal White Sea-Dweller
Below is a comparison between the “Rail Dial 1665” and the normal White Sea-Dweller 1665. In the pictures you can clearly see the three items mentioned — the line-up of the “C” in a “Rail” configuration, the italics font of the depth markings, and the markers closer to the minute track.
Rail Dial vs. Normal White SD — Side by Side Comparison
Photos — Aston
On closer inspection, the Rail Dial also shares the same font style with the COMEX 1665. However, there are some points where the COMEX and the Rail Dial do not share characteristics:
Shared with COMEX 1665
T SWISS T <25 marking
Stern Company production
Font style (text)
Rail alignment of CHRONOMETER text
Not Shared with COMEX 1665
“Date” printing
600m / 610m depth markings
Shape of coronet
Additional Reference Photos
Rail Dial Detail — Photo 2
Rail Dial Detail — Photo 3
Photos — Aston
Collector Context
The COMEX Connection
Since most people don’t like to wear their COMEX watches for daily use — because of their collectibility and high value — the Rail Dial 1665 is a perfect substitution for everyday wear. The Rail Dial has a hidden story tied to the Stern Company and its relationship with COMEX. It is a kind of fun to imagine that this Rail Dial might have been sent to COMEX in the late 1970s.
The Double Red Sea-Dweller 1665s spiraled in popularity and value significantly in the years since this page was written, and the Rail Dials have followed — exactly as predicted. For the serious 1665 collector, the Rail Dial represents a rare and historically significant variant that bridges the gap between the standard White Sea-Dweller and the ultra-collectible COMEX examples.