Important Modern & Vintage Timepieces

Monaco, Jan 19, 2023

LOT 60


EUR 100,000 - 200,000

USD 108,000 - 216,000 / HKD 840,000 - 1,680,000 / CHF 99,000 - 198,000

Sold: EUR 122,200

Very fine and extremely rare, 18K white gold and diamond-set, self-winding, “tonneau”-shaped, gentleman’s, water-resistant with case-back screwed by eight screws, black dial with 11 diamond-set indexes, centre-seconds, date of the month (aperture at 3 o'clock); 18K white gold octagonal ship's porthole-shaped bezel and integrated bracelet set with 302 brilliannt-cut diamonds.

Grading System
Case: 2-8

Very good

Slightly scratched

Movement: 2*

Very good

Overhaul recommended, at buyer's expense

Dial: 2-01

Very good

HANDS Original

Brand Audemars Piguet, Le Sentier (Vallée de Joux)

Model "Royal Oak"

Reference 4275BC

Year sold on September 14, 1982

Movement No. 244 697

Case No. B 78 597

Material 18K white gold

Bracelet integrated 18K white gold and diamond-set AP bracelet

Length 150 mm. (approx.)

Caliber 2123/1, 33 jewels

Dimensions 35 mm.

Weight 151.2 gr. (approx.)

Signature dial, case and movement

Accessories Certificate of authenticity and origin, service's paper


Initially launched at the beginning of the 1970’s the "Royal Oak" was the most expensive stainless steel wristwatch. After a slow beginning, this luxury sports model encountered an unprecedented success. The reference 4275 belongs to the model 4100 family.

In addition to the gemset bezel (made of 11 brilliant-cut diamonds) as it was made for the Ref. 4153, there is a "line-set" bracelet: a row of 72 brilliant-cut diamonds crosses each link from side to side, passing between the pairs of studs.

According to the manufacture, a study of the Production Register (Registre d’Etablissage) shows a total production of 27 watches sold between 1981 and 1985, of which 15 were in white gold and 12 in yellow gold. The present watch is one of the nine Ref. 4275BC distributed in 1982.