Grönefeld - The Hong Kong Watch Auction: XV Hong Kong Monday, November 28, 2022 | Phillips

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  • Manufacturer: Grönefeld
    Year: Circa 2013
    Case No: 3/30
    Model Name: One Hertz Techniek No. 3
    Material: Titanium
    Calibre: Manual, G-02, 39 jewels
    Bracelet/Strap: Crocodile
    Clasp/Buckle: Titanium Grönefeld buckle
    Dimensions: 43mm diameter
    Signed: Case, dial, movement and buckle signed
    Accessories: Accompanied by Grönefeld Certificate of Authenticity signed by Tim and Bart Grönefeld dated 21st October 2013, wooden presentation box, and outer packaging.

  • Catalogue Essay

    The present One Hertz Techniek No. 3 perfectly encapsulates the essence of Grönefeld, featuring a beautiful matte galvanised silver dial with a contemporary, playful display of time and a single push-down crown. Launched 2010, this timepiece was numbered 3 of a 30-piece limited line of the world’s first serially produced watch made with an independent deadbeat seconds. Taking centre stage on an elevated bridge, this complication is clearly the most prominent feature of this watch as it occupies most of the dial while the time relegates to a less significant role as indicated in the small sub-register at 2 o’clock.

    Though this feature is not uncommon in horology, the watch community was fascinated by Grönefeld's innovative approach to powering its deadbeat seconds with a unique secondary gear train, which separates the seconds’ independent mainspring barrel from the hours and minutes’. Made entirely in-house, the sapphire caseback exposes a movement that is manually finished to the highest degree with stainless steel bridges throughout and the use of a free-sprung variable inertia balance with Phillips overcoil.

    Consigned by the original owner and preserved in an excellent overall condition, the present Grönefeld titanium wristwatch is a rare and exciting piece, full of potential.

Property from the Original Owner


A rare and fine limited edition titanium wristwatch with independent deadbeat seconds, power reserve indication, single push-down crown, certificate and presentation box, numbered 3 of a limited edition of 30 pieces

Circa 2013
43mm diameter
Case, dial, movement and buckle signed

HK$200,000 - 400,000 

Sold for HK$504,000

Contact Specialist

Thomas Perazzi
Head of Watches, Asia
+852 2318 2001

The Hong Kong Watch Auction: XV

28 - 29 November 2022 (Online Registration ends 27 Nov, 2pm HKT)