Important Collectors’ Wristwatches, P...

Geneva, Oct 04, 2009

LOT 203

Ingenieur International Watch Co., Schaffhausen, ?Ingenieur?, movement No. 1610828. Made in the 1960?s. Fine and rare, water-resistant, center seconds, anti-magnetic, self-winding with ?Pellaton? system, ?Staybrite? stainless steel wristwatch with date and a stainless steel IWC bracelet ?a petites mailles? with deployant clasp, signed Gay Frères.

CHF 6,000 - 8,000

USD 5,700 - 7,500 / EUR 4,000 - 5,300

Sold: CHF 7,800

C. Three-body, polished and brushed, antimagnetic cap to protect the movement against magnetic fields, screwed-down case-back, flat bezel, concave lugs. D. Satiné silver with applied steel faceted dart indexes, luminous dots, outer minute division, steel rimmed date aperture. Luminous steel dauphine hands. M. Cal. 8531, rhodium plated, oeil de perdrix decoration, 21 jewels, straight line lever escapement, monometallic balance, shock absorber, self-compensating blued steel Breguet balance spring, index regulator. Dial, case and movement signed. Diam. 36 mm. Thickness 13 mm. Approx overall length 190 mm.


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Grading System
Grade: A

Good

Case: 3

Good

Movement: 3*

Good

Overhaul recommended, at buyer's expense

Dial: 3-01

Good

HANDS Original

Notes

Caliber 8531 was launched in 1959.