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Corum - A Golden Bridge automatic for Only Watch

Corum A Golden Bridge automatic for Only Watch

Corum is pursuing its commitment on behalf of research on Duchenne muscular dystrophy and creating a new unique model on behalf of the Only Watch auction.

Press release

Over 40 watch brands are devoting their expertise to giving life to the dreams of children affected by muscular dystrophy. Corum is associating with the ONLY WATCH auction to be held on September 22nd 2011 and organized by the Monaco Association Against Muscular Dystrophy (AMM), and from which profits are entirely devoted to research on Duchenne1 muscular dystrophy. The one-of-a-kind watch presented by Corum is inspired by a new model presented at Baselworld this year, the Golden Bridge Automatic. Corum presents its new baguette movement with automatic winding in a unique titanium case, coated with an anthracite colored Titalyt treatment, specially developed for ONLY WATCH.




Antonio Calce, CEO of Corum, said: “Children's dreams have the capacity to change the world; let's help them fulfill their dreams of a better world. I am very happy to be able to associate our brand with this cause and, thanks to our help, to enable children for whom time is a luxury to make their dreams come true. For ONLY WATCH, I've chosen to present a model that is unique on the market, a model featuring a transparency that gives pride of place to the magic of time in motion, the Golden Bridge Automatic.”

The exclusive new Corum Caliber C0313, an automatic linear-winding baguette movement, called for over four years of development and laboratory testing to verify the materials, the frictional forces and the physics of the winding mechanism. Equipped with a linear oscillating weight made in platinum and visible from both sides of the case, along with a slipping spring mechanism, this Golden Bridge movement beats at a frequency of 4 Hz (28,800 vibrations per hour) and is endowed with a 40-hour power reserve. This 194-part caliber is also fitted with a variable-inertia balance – guaranteeing long-term precision – as well as a barrel that is miniaturized so as not to break the smooth vertical lines of the mechanism. The mainplate and bridges are made from 18kt white gold and adorned with a new vertical guilloché motif matching the linear design of the oscillating weight and accentuating the powerful character of this in-line movement.

The complexity of such a movement – Caliber CO313 is one of the rare movements with linear oscillating weight on the market – lies first and foremost in resolving the inertia issues inherent to any movement of this type. Hence the use of a precious and dense metal, in this instance platinum, for this linear oscillating weight weighing 4 grams and which swings 1 cm, before its motion is slowed down or “damped” by a system of gaskets that send it swinging back in the other direction, thereby supplying the movement with all the energy it needs to continue moving.


The principle governing the development of CORUM Caliber CO313 was to offer a floating, linear oscillating weight floating on rails. The latter are made in steel with a PTFE Teflon coating, while the contact zones between the chariot and the rails are made from beryllium copper. This association of materials ensures optimal performance. The energy derived from the winding is transmitted via a rack fixed to the oscillating weight and constantly engaged with a reverser system – ensuring unidirectional winding – equipped with ceramic ball bearings and requiring no lubrication.

This exceptional caliber powering the Golden Bridge Automatic ONLY WATCH is housed within a new tonneau-shaped case in Titalyt-treated titanium, slightly cambered to ensure maximum comfort on the wrist. Featuring matt gray surfaces, it provides superb views of the Golden Bridge automatic movement, not only from both dial and case-back, but also from each of the sides. No less than four antiglare sapphire crystals are thus required to make a case that looks very much like a showcase housing a precious object. The anthracite-colored two-part dial with a red minute track echoing the ONLY WATCH signature codes conceals nothing of the fabulous mechanism and enables observers to admire the linear oscillating weight in motion. The back of the watch is engraved with the Corum logo, and with the ONLY WATCH PIECE UNIQUE 2011 inscription in red.

Fitted with a black crocodile leather strap featuring red stitching and a titanium pin buckle, the new GOLDEN Bridge Automatic ONLY WATCH by Corum is a limited edition of one.


This model can be admired during the WORLD TOUR running from August 30th to September 17th and including the following stopovers:

Singapore (Malmaison by The Hour Glass) – 30th August
Hong Kong (Antiquorum Auctioneers Ltd.) – 1st September
Shanghai (Antiquorum Shanghai) - 3rd September
Beijing - 5th September
Tokyo (The Hour Glass) - 7th September
Los Angeles (Westime Beverly Hills) - 9th September
New York (Antiquorum USA, Inc.) - 12th September
Milan (Orologerio Luigi Verga) - 15th September
Genève (Antiquorum Geneva SA.) - 16th & 17th September
Monaco (Monaco Yacht Show) - 21st & 22nd September

Golden Bridge Automatic ONLY WATCH

Reference 313.150.04/0081 FK11
Unique Piece
Movement CO313
Automatic baguette movement with linear winding
Oscillating weight made of Platinum
Slipping spring mechanism
Variable inertia balance adjustable by screws
Frequency: 4Hz, 28'800 vibrations/hour
26 jewels
Plate and bridges made of 18kt gold, guilloché decoration
Power reserve of 40 hours
Functions:Hours, minutes
Case Titanium case with charcoal Titalyte treatment, tonneau-shaped
37.2 x 51.8 mm
Satin-finished surfaces
Fluted crown at 6 o'clock decorated with CORUM key
Sapphire crystal open back cover under the movement engraved with
Corum logo and ONLY WATCH 2011 PIECE UNIQUE in red
Dial:Charcoal dial with red minuter
Applique hour indexes
Skeleton hour and minute baton hands
Glass:Sapphire crystal
Strap:Black crocodile leather strap, with red hand-stitching
Buckle:Titanium tongue buckle with charcoal Titalyte treatment
Water-resistance 3atm (30 meters / 99 feet)


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Corum takes aesthetic daring to the heights of technical perfection. Through a number of collections, drawing on the fundamentals of traditional watchmaking, the manufacture continues to pursue its path free from the influence of passing trends.

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