Vacheron Constantin Caliber 3750

The Vacheron Constantin caliber 3750 is found in the record breaking Reference 57260 grand complication pocket watch. This movement was built by three watchmakers and was announced in 2015.

Six calibers in one…

Jewel Count:

This watch has the highest number of functional jewels in the world with a jewel count of 242. This is a Swiss made caliber with a Geneva certified hallmark.

Complications List:

As mentioned above, the Reference 52760 has 242 jewels that are actually used. This high jewel count helps to keep the friction minimal in the watch’s 57 complications (including four calendars).

1. Hours, minutes, seconds, average solar time (regulator)
2. Three-shaft tourbillon
3. Tourbillon regulator with spherical balance spring
4. 12-hour time zone, second hours and minutes time zone
5. 24-city display for each time zone
6. Day/night indication for 12-hour time zone
7. Gregorian perpetual calendar
8. Gregorian day name
9. Gregorian month name
10. Gregorian retrograde date
11. Leap year and four-year cycle display
12. Number of the day of the week (ISO 8601 calendar)
13. Week to view (ISO 8601 calendar)
14. Hebrew perpetual calendar and 19-year cycle
15. Hebrew day number
16. Hebrew month name
17. Hebrew date
18. Hebrew secular calendar
19. Hebrew century, decade and year
20. Age of Hebrew year (12 or 13 months)
21. Golden number (19 years)
22. Seasons, equinoxes, solstices and signs of the Zodiac indicated by the hand on the sun
23. Star chart (for the owner’s city)
24. Sidereal time hours
25. Sidereal time minutes
26. Equation of time
27. Sunrise times (for the owner’s city)
28. Sunset times (for the owner’s city)
29. Length of day (for the owner’s city)
30. Length of night (for the owner’s city)
31. Moon phases and age (one correction every 1,027 years)
32. Date of Yom Kippur
33. Retrograde seconds chronograph (one column wheel)
34. Retrograde split-seconds chronograph (one column wheel)
35. Hours counter (one column wheel)
36. Minutes counter
37. Alarm with its own gong and gradual striking
38. Alarm strike / silence indicator
39. Choice of normal alarm or carillon striking alarm indicator
40. Alarm mechanism coupled to the carillon striking mechanism
41. Alarm striking with choice of grande or petite sonnerie
42. Alarm power-reserve indication
43. System to disengage the striking mechanism when alarm barrel fully unwound
44. Westminster carillon chiming with 5 gongs and 5 hammers
45. Grande sonnerie passing strike
46. Petite sonnerie passing strike
47. Minute repeating
48. Night silence feature (10 p.m. to 8 a.m.)
49. System to disengage the striking barrel when fully wound
50. Indication for grande or petite sonnerie modes
51. Indication for silence / striking / night modes
52. Movement power reserve indicator
53. Power-reserve indication for the striking train
54. Winding crown position indicator
55. Dual barrel winding system
56. Time setting in two positions and two directions
57. Secret mechanism (opening of the button for alarm arbor)

Complications list source

Legibility is Key:

Is legibility your thing? Do you think having 57 complications would… complicate things? Vacheron Constantin doesn’t think so. Here’s what they had to say about it:

“Featuring a double dial, the Reference 57260 watch offers an elegant display with perfect readability … Considering the number of major complications on display, the front and back dials of the Reference 57260 watch rise to the challenge with a display that is exceptionally easy to read.” –source

Where can you buy a Reference 57260?

There is only one in the world. VC lists this timepiece as a one-of-a-kind custom-made piece, so you’ll have to wait for the current owner to put it up on eBay or something. No lowball offers!

Additional Resources:

• Official VC 57260 page
• Reference 57260 press-release