Patek Philippe Grandmaster Chime Celebrates their 175th Anniversary

Patek Philippe Grandmaster Chime Ref. 5175 Is Possibly the Greatest Watch in a Generation…

And, it should be. The Patek Philippe Grandmaster Chime is 175 years in the making. What makes it so special, apart from the fact that Patek Philippe is only making 7 (6 for sale and 1 for the Patek Philippe museum) and that it costs $2.5 million, that is? How about 20 complications, a stunning rose gold case and six patents. This won’t be my ordinary type of post. There is just too much to this watch for me to do it justice. So… below find the tech specs, list of patents and list complications on the Patek Philippe Grandmaster Chime Reference 5175. Oh, and definitely check out the video below. It’s a bit long, but totally worth it.

Patek Philippe Grandmaster Chime Ref. 5175

Patek Philippe Grandmaster Chime Ref. 5175 Complications

  1. Grande Sonnerie
  2. Petite Sonnerie
  3. Minute repeater
  4. Strikework mode display (Silence/Grand Sonnerie/Petite Sonnerie)
  5. Alarm with time strike
  6. Date repeater
  7. Movement power-reserve indicator
  8. Strikework power-reserve indicator
  9. Strikework isolator display
  10. Second time zone
  11. Second time zone day/night indicator
  12. Instantaneous perpetual calendar
  13. Day-of-week display
  14. Month display
  15. Date display (on both dials)
  16. Leap year cycle
  17. Four-digit year display
  18. 24-hour and minute subdial
  19. Moon phase
  20. Crown position indicator (RAH)

 Patek Philippe Grandmaster Chime Ref 517520

Patek Philippe Grandmaster Chime Ref. 5175 Technical Specifications

MOVEMENT 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 72 Hours (Minimum)
STRIKEWORK POWER RESERVE 30 Hours
BALANCE TYPE Gyromas
FREQUENCY 25,200 semi-oscillations per hour (3.5 Hz)
BALANCE SPRINCE Spiromax
FUNCTIONS 3-position crown

  • Pushed home: To wind the movement clockwise; to wind the strikework counterclockwise
  • 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 Pushers for the second time zone (“+” and “-“), alarm, minute repeater
CORRECTION PUSH PIECES Year display (“+” and “-“), date, month, day, moon phases
HALLMARK Patek Philippe Seal
CASE Round, with patented reversing mechanism on the axis from 12 to 6 o’clock, 18K rose gold, 214 parts, sapphire crystals on both sides, protected against dust and moisture, not water-resistant Laurel wreath motif on bezel, caseband and lugs relief-engraved by hand, hand-engraved function inscriptions and symbols on caseband and pushers
CASE DIMENSIONS Diameter (10 to 4 o’clock): 47.4 mmThickness (crystal to crystal): 16.1 mm
TIME-SIDE DIAL 18K gold, silvery white opaline, center with radially undulated guilloché pattern, applied 18K gold Roman numerals, Local time hour and minute hands in black nickel-plated 18K white gold, hour hand for second time zone in 18K rose goldHands for alarm time, movement and strikework power-reserve indicators, strikework mode and crown position in 18K rose gold
CALENDAR-SIDE DIAL 18K gold, silvery white opaline, center with polished gold frame for the four-digit year displaySubsidiary dials for the 24-hour display, day, month, date, and leap-year cycle with black printed scales and black nickel-plated steel hands
STRAP Alligator with large square scales, hand stitched, dark brown, hand-patinated, fold-over clasp in 18K rose gold fully engraved by hand

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Patek Philippe Grandmaster Chime Ref 51752

Patek Philippe Grandmaster Chime Ref. 5175 Patents and Innovations (Straight from Patek Philippe)

Patent: Alarm mechanism with time strike

Mechanism that acoustically indicates a preset alarm time with hour, quarter-hour, and minute strikes using the chiming mechanism of the minute repeater.
 

Patent: Isolation of the Grande Sonnerie in the Silence mode

Mechanism that totally uncouples the Grande Sonnerie from the movement when the Silence mode is selected, eliminating friction and thus power consumption.
 

Patent: Selection of strikework operating mode

Mechanism that allows the automatic time strike to be selected or disabled with a single slide switch: Grande Sonnerie, Petite Sonnerie or Silence. Formerly, two separate switches were needed to make these settings.
 

Patent: Date repeater

Mechanism that obtains date information from the perpetual calendar and forwards it to the repeating mechanism. Manufacture president Thierry Stern is the inventor.
 

Patent: Reversible wristwatch case

Wristwatch case with rotating and latching devices in the lugs, allowing it to be turned along the axis from 12 to 6 o’clock and locked in either of 2 positions.
 

Patent: Mechanism for a four-digit year display

Mechanism that automatically synchronizes the four-digit year display with the leap-year cycle and allows convenient correction of both displays in either direction.
 

Innovation: The strikework differential

An innovative masterpiece of micromechanical engineering (not patented): the differential between the strikework double barrels and the two strikework mechanisms for the Grande Sonnerie (incl. minute repeater and alarm) and the date repeater. It has a diameter of 7.2 mm and consists of 19 separate parts, one of which is an 11-part ball bearing with 7 balls with a diameter of 0.3 mm each. Despite its small size, it is robust enough to transmit the torque of the strikework barrels which exceeds 1700 gmm.
Patek Philippe Grandmaster Chime Ref 517519

Patek Philippe Grandmaster Chime Ref. 5175 – Patek Philippe 175th Anniversary Watch Making of Video

Patek Philippe Grandmaster Chime Ref. 5175 – Patek Philippe 175th Anniversary Watch Video Gallery

 

Author: Nick Glasnovich

Founder & Executive Editor of TickTickVroom.com.

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