Hong Kong, Nov 26, 2022

LOT 409

INTERNATIONAL WATCH Co., IWC
REF. 666 A, ANTI-MAGNETIC, SELF-WINDING, CENTRE-SECONDS, DATE, SILVER DIAL, GAY FRÈRES BRACELET; “INGENIEUR”; STAYBRITE STAINLESS STEEL

HKD 35,800 - 72,000

EUR 4,600 - 9,200 / CHF 4,500 - 9,000 / USD 4,600 - 9,100

Staybrite stainless steel, self-winding, round-shaped, anti-magnetic gentleman’s chronometer wristwatch, two-piece case, water-resistant with screwed case-back, movement protected inside a soft iron calotte (protective container) against magnetic fields, silver colour dial with applied radial indexes and luminescent dots, centre-seconds and one horological complication:
· Half-instantaneous date of the month (aperture at 3 o’clock)


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Grading System
Grade: AAA

Excellent

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 International Watch Co., Schaffhausen / Schaffhouse

Model “Ingenieur”

Reference 666 A

Year circa 1960

Movement No. 1 611 593

Case No. unnumbered

Material Staybrite stainless steel

Bracelet stainless steel IWC “beets of rice” bracelet with deployant clasp (by Gay Frères, Geneva, dated 1/66)

Diameter 36.5 mm.

Length 190 mm. (approx.)

Caliber 8531, 12’’’ ½, straight-line lever escapement, 21 jewels

Weight 81.5 gr. (approx.)

Signature dial, case and movement

Notes

Staybrite stainless steel

The mention “Acier Staybrite” is the trade name of an early stainless steel alloy conceived and patented by the Brown Firth Research Laboratories in Sheffield, United Kingdom of Great Britain.