Credits: Article and images by Tim Mosso @ Quill & Pad. See the original article here - https://quillandpad.com/2024/09/28/de-bethune-db28gs-yellow-submarine-reviewed-by-tim-mosso/
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Distinctive functional highlights start with the Triple Pare-Chute springs that flank the balance bridge. These steel leaf springs have been detailed with decoration but left in their natural color.
De Bethune DB28 GS Yellow Submarine
The yellowed balance bridge is different from the round cross-section model used on most DB28 models, and its flatter profile combines with twin-spar design to produce greater shock compliance on this explicitly sports-oriented design.
De Bethune DB28 GS Yellow Submarine
Old-school Incabloc provides the last line of defense atop the balance staff pivot. While this system has survived field tests in pro tennis matches, its equal purpose is to limit the total displacement of the balance pivots from their cup jewels. In other words, both durability against shock and chronometry are improved.
Balance bridge shock protection of the De Bethune DB28 GS Yellow Submarine
De Bethune’s 2016 patent balance wheel – there were nine prior designs – is fired yellow titanium to match the movement and is equipped with white gold masses in its rim. Each new De Bethune balance variant is intended to maximize total mass in the rim, minimize the frictional effects of aerodynamic drag, and reduce the impact of temperature change on timing.
The hairspring is a patented two-piece assembly that involves cutting a standard hairspring, imparting a De Bethune proprietary curve to each piece, and clamping the two back together. This spring sits flat (i.e., thin) and breathes concentrically like an overcoil for consistent timing in any position.
Few of these ergonomic nightlights saw the light of day. 25 pieces were made, and that’s about as large a yearly run as any DB28 given the parent brand’s sub-400-unit annual production. And this is fine.
De Bethune DB28 GS Yellow Submarine
Big, visually loud, and expensive, the Yellow Submarine is a daily pleasure for the fortunate few. But unlike most elites, it has the common touch. Few watches inspire more smiles on the faces of onlookers.
For more information, please visit www.debethune.ch/en/collections/db28-collections/db28gs-yellow-submarine
Quick Facts: De Bethune DB28GS Yellow Submarine
Reference Code: DB28GSV2YN
Edition: 2020, 25 pieces
Functions: Hours, minutes, seconds, LED light, power reserve indicator; diving bezel
Case: Grade five titanium fired yellow; 44mm diameter; 13mm thick; 50.4 – 54.4mm variable lug-to-lug; 26mm lug spacing; unidirectional 60-click diving bezel; case engraved with Microlight striations around circumference; trigger for lights at six o’clock; 105-meters WR with screw-down crown; sapphire caseback
Strap: Brown rubber and alternate alligator leather strap
Clasp: Titanium double-fold deployant clasp
Dial: Hours, minutes, seconds; passive luminescence; yellow fired titanium motion works bridge and base plate cap with Microlight engraving; four LED lights; yellow fired barrel bridge cap; escapement; centrifugal governor for LED dynamo pacing; power reserve indicator at 9 o’clock
Movement: Caliber DB2080; manual 120-hour power reserve; 4Hz; patented hairspring curve; proprietary titanium and white gold balance wheel; 35 jewels; LED lighting by mainspring-driven dynamo; 30mm in diameter; balance bridge with Triple Pare-Chute shock protection; twin mainspring barrels with over-wind protection; silicon escape wheel
2024 Preowned Price: $185,000-$195,000
Tim Mosso is the media director and watch specialist at The 1916 Company. You can check out their very comprehensive YouTube channel at www.youtube.com/@the1916company.
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Credits: Article and images by Tim Mosso @ Quill & Pad. See the original article here - https://quillandpad.com/2024/09/28/de-bethune-db28gs-yellow-submarine-reviewed-by-tim-mosso/
