Vacheron Constantin Dual Moon Grand Complication Is A Unique Piece

Vacheron Constantin Dual Moon Grand Complication Is A Unique Piece

The Dual Moon Grand Complication is a highly complex model distinguished by the legibility of its hourly and astronomical functions, stemming from Vacheron Constantin’s characteristic design quest focused on the essentials. 

A single-piece edition created by Vacheron Constantin’s Les Cabinotiers department, this double-sided Dual Moon Grand Complication watch with its 11 time-related and astronomical complications regulated by a tourbillon and enhanced by a minute repeater radiates a rare degree of elegance. 

There is perfect legibility of the functions as well as the meticulous care devoted to the details of the decoration and finishing. The result is an understated and complex watch endowed with self-evident functions. 

The front thus features the precision double moon-phase display, with its age, an impressive show staged in the dial centre and complemented by the hours, minutes and perpetual calendar indicators. The latter is notably distinguished by its retrograde date, a Vacheron Constantin technical and aesthetic signature. Astronomical indications appear on the reverse side of the watch with the time of the sidereal day – which is four minutes shorter than the civil day – and with a sky chart showing the position of the constellations in real time. 

The back of the watch also features an opening revealing the tourbillon and its Maltese cross-shaped carriage. Incorporating a minute repeater chiming the hours, quarters and minutes on demand, the model is powered by Calibre 2755 TMRCC QP, whose base movement represents one of the brand’s major developments.

Technical Specifications:

Les Cabinotiers Dual moon – Grand Complication 

Reference 9770C/000G-007C 


2755 TMRCC QP 
Developed and manufactured by Vacheron Constantin 
Mechanical, manual-winding 
40.50 mm diameter, 14.30 mm thick 
Approximately 58 hours of power reserve 
2.5Hz (18,000 vibrations/hour) 
774 components 
50 jewels 
Hallmark of Geneva certified timepiece 


Front side Hours and minutes 
1 Minute repeater 
2-6 Perpetual calendar with retrograde date with instantaneous hand return, semi-instantaneous day and month & year instantaneous 
7-8 Precision Moon phases and age of the Moon for North and South hemispheres 
Back side 9 Sideral hour indication (24H) 
10 Celestial chart 
11 Tourbillon 


18K white gold 
46 mm diameter, 17.10 mm thick 

Dials (face & back)

Metal, Sand blasted silvered 
18K gold hands and applied hour-markers 


Dark blue Mississippiensis alligator leather, hand-stitched, saddle-finish, large square scales 


18K white gold folding clasp 
Half Maltese cross-shaped 

Box Les Cabinotiers box 

Price upon request

For more information please visit Vacheron Constantin

Announcements Collector's World Lifestyle News Reviews