Important Modern & Vintage Timepieces

Hong Kong, Apr 25, 2021

LOT 286

Ref. 3970 / 002 G, chronograph, minute counter, perpetual calendar, leap-year indication, moon phases, black colour dial with diamond-set indexes; 18K white gold

HKD 1,300,000 - 1,661,400

USD 160,600 - 214,200 / CHF 149,300 - 199,080

18K white gold, round-shaped, gentleman’s wristwatch, water-resistant with sapphire-crystal screwed case-back, subsidiary seconds at 9 and nine horological complications:
  • 1/5 second chronograph with round push-pieces
  • Half-instantaneous 30-minute counter (subsidiary dial at 3 o’clock)
  • Half-instantaneous perpetual calendar à guichets (with apertures)
  • Date of the month (subsidiary dial at 6 o’clock)
  • Day of the week (aperture at 11 o’clock; indications given in English)
  • Month of the year (aperture at 1 o’clock; indications given in English)
  • Four-year cycle of leap-years (subsidiary dial at 3 o’clock)
  • Phases of the moon (aperture at 6 o’clock)
  • Diurnal (day-time) and nocturnal (night-time) hours with a 24-hour (AM-PM) scale (subsidiary dial at 9 o’clock)
Black colour “semi-glossy” dial set with ten diamonds indexes (nine brilliant-cut diamonds and one baguette-cut diamond).
Additional silver colour “semi-glossy” dial, with 18K white gold “Obus” indexes.

Grading System
Case: 2

Very good

Movement: 1*

As new

Overhaul recommended, at buyer's expense

Dial: 1-01

As new

HANDS Original

Brand Patek Philippe, Geneva

Reference 39700 / 002 G

Year Circa 1994

Movement No. 3 045 075

Case No. 2 953 542

Bracelet integrated 18K white gold Patek Philippe bracelet with clasp

Diameter 36.5 mm.

Caliber CH 27-70 Q, adjusted to heat, cold isochronism and 8 positions, Geneva Quality Hall Mark

Dimensions Length 180 mm. (approx.)

Signature dial, case and movement

Accessories certificate of origin; Extract from the Archives; Patek Philippe repair invoice (dated Milano, October 26, 2009)


The original Certificate mentioned that this watch was sold on November 29, 2001.
The Extract from the Archives, dated March 16, 2010, mentioned that this watch was made in 1994 and sold on December 20, 1994.
Patek Philippe, Ref. 3970 and Ref. 3971
This reference is launched in 1986.
The production of this model began with the Cal. 27-70 Q bearing the serial number 875 000.
When Patek Philippe first launched this new series of watches, Ref. 3970 was the model bearing a metallic snap-on case-back, while Ref. 3971 was equipped with a screwed down sapphire case-back.
Very soon, the reference number of this model was standardised to Ref. 3970, sold either with one or two screwed down case-backs; one of these backs could be a screwed down metallic case-back, while the second, (non-compulsory), a screwed sapphire crystal case-back.
In consequence, very few watches bear Ref. 3971.
  • Huber, Martin, & Banbery, Alan, Patek Philippe Wristwatches, 1998, p. 305.