Rudis Sylva Harmonious Oscillator RS 23
Unveiled at Watches and Wonders 2024, RS 23 is a new and simplified version of the Rudis Sylva Harmonious Oscillator watch.
Developed by Rudis Sylva, Harmonious Oscillator is a patented invention with two toothed balances immediately cancels out the effects of gravity when a watch is in the vertical position, unlike a conventional Tourbillon, which needs a whole minute to do so. Hailing from the Jura Arc, the brand unveiled its invention at Baselworld in 2009.
Now, Rudis Sylva is launching a simplified version of the Harmonious Oscillator adapted by Dubois Dépraz engineers in La Vallée de Joux.
The toothed, geared balances are fixed and no longer rotate once per minute in a 360-degree cage as in the “Tourbillon” version. This simpler execution with two connected balances also allows all chronometric anomalies caused by the Earth’s gravitational pull to be cancelled out simultaneously, and therefore remains more precise than a conventional Tourbillon which needs 60 seconds to compensate for the effects of gravity.
Hand guilloche work has been showcased since the very first Rudis Sylva collection in 2009. The “flinqué” decoration for the new RS 23 collection was created by award-winning craftsman Georges Brodbeck.
The RS 23 collection is available in a rose gold or titanium case, and is released in a limited edition of 8 pieces of each.
Model: Rudis Sylva Harmonious Oscillator RS 23
Case
18K pink gold or titanium
Diameter: 44 mm
Height with glass box: 12.9 mm
Case finish: Polished and vertical brushed
Inter-horn distance: 23 mm
Case-back: Pink gold or titanium, screwed Engraving by hand and boring cutter
Decoration: Sand finished, galvanic grey or brown treatment
Crown: Pink gold or titanium with engraved logo
Strap
Real alligator, large scales with tassel, brown / black
Tongue buckle in 18K pink gols or titanium
Brand logo
3 pine trees on 3 mountains
Logo symbolism settling of the Jura by clearing, around 1350
Hands
Brass
Decoration: Rose gold 5N plated and blue
Movement
Manufacture calibre made by Rudis Sylva
Harmonious Oscillator, fixed balances
Dimensions: H. 7.78 mm / w. 39.55 mm
Winding: Manual, 49 crown revolutions
Power reserve: About 72 hours
Second stop
Harmonious Oscillator system unique worldwide, patent no. 700747
Balances toothed, interlinked, ensuring the same amplitude
Escapement only 1 with 1 pallet fork positioned at 90 degrees
Frequency: 21,600 vibrations/hour (3 Hz)
Balance-spring symmetry and energy constantly opposed
Vertical gravity correction instantaneous eliminating the effect of gravity
Movement finishes
Main plate: Sand and bevelling
Bridges: Hand-decorated, bevelling, sanding
Gear train: Circular graining, diamond-polished corners
Barrel drum: Snailed
Rudis Sylva bridge: Brushing and bevelling, 1 inward corner
Balance cock, over the Oscillator: Brushing and bevelling, 1 inward corner
Main plate: Sand decorated and bevelled by hand
Oscillator bridge decoration: Hand guilloché, flinqué
Retail prices
RS 23 rose gold version: 90,000 CHF
RS 23 titanium version: 80,000 CHF
