Geneva, Nov 04, 2023

LOT 30

IWC, SWITZERLAND, REF. 9503, INGENIEUR SL JUMBO, AUTOMATIC DIAMONDS, YELLOW GOLD

CHF 15,000 - 25,000

EUR 15,800 - 26,300 / USD 16,700 - 27,700 / HKD 130,000 - 218,000

Sold: CHF 20,000

A fine and very rare, heavy 18k yellow gold, self winding jumbo tonneau-shaped, center- seconds, water-resistant, diamond-set wristwatch set with a total of 333 diamonds, instantaneous date.


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Grading System
Grade: AAA

Excellent
Case: 3

Good
Movement: 3*

Good

Overhaul recommended, at buyer's expense
Dial: 3-01

Good

HANDS Original

Brand IWC, Switzerland

Model Ingenieur SL Jumbo

Reference 9503

Year Made in 1982

Movement No. 2149389

Case No. 2259380

Bracelet integral 18K yellow gold and diamond-set IWC link bracelet by Gay Freres with deployant clasp, approx. lenght 195 mm.

Diameter 40 mm.

Caliber 8541 B, rhodium-plated and oeil-de-perdrix decoration, 28 jewels, straight-line lever escapement, monometallic balance adjusted to five positions, shock absorber, self-compensating flat balance-spring, micrometer regulator.

Signature Dial, case and movement

Accessories Original box

Notes

The IWC Ingenieur SL Automatic was produced in less than 600 examples between 1976-1984. Examples entirely cased in 18K yellow gold, such as the present lot, were only produced for two years, making them amongst the most sought after watches from the Ingenieur family.