Académie Horlogère des Créateurs Indépendants


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Gerald Genta

Tourbillon Sonnerie Repetition "Piece Unique" CHF 210 000


A unique, impressive and extremely complicated yellow gold grande and petite sonnerie minute repeating wristwatch with Westminster chime and tourbillon, from the haute horlogerie Swiss watch brand Gérald Genta, founded in 1969 and active until 2010. Estimated production period: 2004–2010. Сase in 18k yellow gold, diameter 41mm, sapphire caseback. Openworked dial with spherical polished indexes, and ‘filet sauté’ guilloché motif. Caliber GG 31001, hand-wound, with reversed hand-fitting, chiming and repeating on four hammers onto four gongs, marked by Poinçon de Genève quality mark. Power reserve of sonnerie mechanism: 24 hours in grande sonnerie mode, 28 hours in petite sonnerie mode. Functions – sub-dial for indication of time in hours and minutes at 3 o’clock, tourbillon at 10 o’clock, grande and petite sonnerie and minute repeater with Westminster chime with four striking hammers and four gongs, sonnerie selectors (‘grande/petite’ and ‘silence/chime’) and power reserve indicators (of the caliber and the sonnerie mechanism) installed on the back of the case. Gérald Genta black leather strap with 18k yellow gold Gérald Genta pin buckle. 


The Grande Sonnerie Carillon Westminster Tourbillon Ref. GS1.X.20.893.CN.BA Piece Unique would appear to be a fine purchase for the collector thanks to its outstanding and memorable design, elaborate hand finishing and decoration of the caliber, and the extraordinary combination of Empire and Baroque styles. The grande and petite sonnerie function, as well as a minute repeater is extremely rare and the most complicated among traditional mechanical haute horlogerie complications, made even more sophisticated by the addition of a tourbillon. It would also be a fine occasion for the collector to obtain one of the iconic timepieces of modern haute horlogerie, originating from Gérald Genta, one of the most well-respected names of luxury watchmaking.


CaseYellow gold case 750/1000 with a sapphire caseback, crown grande sonnerie pusher at 9 o'clock, grand or little sonnerie pusher at 10 o'clock, silence or striking pusher at 7 o'clock
StrapOriginal black Alligator strap, with a original yellow gold pin buckle
DialSkeletonized dial, with a Tourbillon display at 10 o'clock, time display at 3 o'clock
MovementFinely engraved & gold plateded hand-wound movement, with one minute Tourbillion, grande & petite sonnerie with 4 hammers, minute repeater, power reserve indication, Poinçon de Genève


Case:Very good, small signs of wear
Strap:Very good, small signs of wear
Dial:Mint condition
Movement:All functions working properly
Amplitude (Dial on top/Lift angle 52):Approx 300°
Accuracy (Dial on top):Approx -10 sec / day


We offer worldwide delivery on all of our watches.

If ordering from Switzerland or Europe, your watch will be sent the same working week. The courier will depend on the value of the watch, with all watches delivered the next working week.

If ordering from outside Europe, delivery will depend on the choice of courier and destination.

You can cancel your order without giving any reason, within 14 days from the day the watch has been delivered to you.


All of our pre-owned watches have undergone thorough mechanical inspections, including being ultrasonically cleaned, serviced and resealed if appropriate and tested for at least four days, to ensure they meet our highest timekeeping standards.

Our pre-owned and vintage watches, unless stated otherwise, are covered by a full or a limited twenty-four month warranty. For example, due to their age, some vintage watches should not be subjected to the same conditions as when they were new.

All of our new watches are covered by the warranty from the original manufacturer. Please contact us for further information.

Please see our Terms & Conditions for further information.



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