With a very fresh and distinctive appearance, the new, highly complex Grandmaster Chime Ref. 6300has taken over the top position in Patek Philippe’s ranking of the most complicated regularly produced wristwatches. The 20 complications of the double-face watch include five chiming functions, two of which are patented world debuts. It comes in a white-gold case with a patented reversing mechanism that allows the timepiece to be worn with either dial facing up.
The new Grandmaster Chime Ref. 6300 should not be confused with the commemorative Ref. 5175 of the same name. With its breathtakingly hand-engraved rose-gold case, the latter is a limited, seven watch edition.
The new Grandmaster Chime features an inimitably new white-gold case with a hand guilloched hobnail pattern and now belongs to Patek Philippe’s regular collection. However, the process of crafting it is so time-consuming that the Ref. 6300 will also remain an exclusive rarity. It strikes the time on three gongs: either automatically every quarter-hour with the Grande or Petite Sonnerie, accurate to the minute with the minute repeater, as an alarm that strikes the preset alarm time, or – for greater time intervals – with the date repeater that acoustically indicates the date on demand.
The modes of these sonorous functions are displayed on the front dial, which also indicates the time, a second time zone, the moon phases, the date, and the power-reserve of the movement and strikework spring barrels. The opposite side is dedicated to the perpetual calendar. Its center is a four digit year display surrounded by four subsidiary dials: the analog date with the leap year cycle at 6 o’clock, the day of the week at 9 o’clock, the month at 3 o’clock, and the 24-hour time indication at 12 o’clock.
The most complicated wristwatch movement ever made by Patek Philippe – the manually wound caliber GS AL 36-750 QIS FUS IRM, composed of 1366 parts – ticks between the two solid-gold dials. Its energy is stored in two double spring barrels. One keeps the movement running for 72 hours. The other one powers the strikework for 30 hours.
It is endowed with numerous supplementary mechanisms that enhance user-friendliness and virtually prevent potentially damaging inadvertent manipulations. The pushers and correctors are labeled with delicate engravings and the dial displays the individual functional modes (time strike mode, alarm ON/OFF, crown position, etc.).
The new Patek Philippe Grandmaster Chime Ref. 6300 comes in an 18K white-gold case with a manually guilloched hobnail motif and features a reversing mechanism integrated between the strap lugs.
The black time-side dial with white printed scale elements as well as white-gold hands and appliques is also decorated with a hobnail pattern. The dial on the opposite side, all in white, has black scales and hands. The watch is worn on a black alligator strap with a white-gold fold-over clasp.
Model: Patek Philippe Grandmaster Chime Ref. 6300
Caliber GS AL 36-750 QIS FUS IRM
Manually wound mechanical movement, 20 complications, chiming mechanism with 3 gongs and 5 different time strikes (Grande and Petite Sonnerie, minute repeater, alarm with time strike, date repeater); second time zone with day/night indicator; instantaneous perpetual calendar (date on both sides, day of week, month, leap-year cycle, four-digit year display, 24-hour and minute subdial, moon phases, strikework mode display, strikework isolator display, alarm ON/OFF, crown position indicator, and power reserve indicators for the movement and the strikework
Diameter: 37 mm
Height: 10.7 mm
Number of parts: 1366
Number of jewels: 108
Number of bridges: 32
Movement power reserve: Min. 72 hours
Strikework power reserve: 30 hours
Frequency: 25,200 semi-oscillations per hour (3.5 Hz)
Balance spring: Spiromax®
• Pushed home To wind the movement clockwise; to wind the strikework counter clockwise
• Pulled halfway out: To set the alarm time
• Pulled all the way out: To set the time
• Strikework mode selector at 9 o’clock
Time dial displays
Local time in hours and minutes, hours in a second time zone, alarm time, analog perpetual date, moon phases, strikework power-reserve indicator, movement power-reserve indicator, strikework mode display, crown position indicator, strikework isolator display (chimes enabled/disabled), alarm ON/OFF
Calendar dial displays
24-hour and minute subdial, four-digit year display, three calendar subdials with analog indications for the day, month, date, and leap-year cycle
Pushers for the second time zone (“+” and “-“), alarm, minute repeater
Correction push pieces
Year display (“+” and “-“), date, month, day, moon phases
Patek Philippe Seal
Round, with patented reversing mechanism on the axis from 12 to 6 o’clock, 18K white gold, 214 parts, sapphire crystals on both sides, protected against dust and moisture, not water-resistant
Case band with hand-guilloched hobnail pattern
Manually engraved function lettering and symbols on the case band and pushers
Diameter (10 to 4 o’clock): 47.4 mm
Thickness (crystal to crystal): 16.1 mm
Time side dial
18K gold, ebony black opaline, center with hand-guilloched hobnail pattern, applied Breguet numerals in 18K white gold
Local time hour and minute hands in 18K white gold, hour hand for second time zone in 18K white gold
Hands for alarm time, movement and strikework power-reserve indicators, strikework mode and crown position in 18K white gold
Calendar side dial
18K gold, white opaline, center with polished gold frame for the fourdigit year display
Subsidiary dials for the 24-hour display, day, month, date, and leapyear cycle with black printed scales and black nickel-plated steel hands
Alligator leather with large square scales, shiny black, hand-stitched white contrast seams, fold-over clasp in 18K white gold
The 20 Complications of Ref. 6300
- Grande Sonnerie
- Petite Sonnerie
- Minute repeater
- Strikework mode display (Silence/Grand Sonnerie/Petite Sonnerie)
- Alarm with time strike
- Date repeater
- Movement power-reserve indicator
- Strikework power-reserve indicator
- Strikework isolator display
- Second time zone
- Second time zone day/night indicator
- Instantaneous perpetual calendar
- Day-of-week display
- Month display
- Date display (on both dials)
- Leap year cycle
- Four-digit year display
- 24-hour and minute subdial
- Moon phase
- Crown position indicator (RAH)