Important Modern & Vintage Timepieces...

Hong Kong, Dec 05, 2021

LOT 110

Ref. 4457 / 1, lady’s, blue “Sigma” dial, integrated bracelet; 18K white gold

HKD 34,000 - 68,000

EUR 3,900 - 7,700 / CHF 4,100 - 8,100 / USD 4,400 - 8,800

Sold: HKD 55,000

18K white gold, manual-winding, vertical rectangular-shaped with cut corners, lady’s wristwatch.
Polished three-piece case, with snap-on case-back.
Blue colour sunburst “Sigma” dial with radial applied white gold indexes.
16-250 calibre, monometallic balance, self-compensating flat hairspring, adjusted to heat, cold, isochronism and 5 positions, “Poinçon de Genève” (Geneva Quality Hallmark or Geneva seal).

Grading System
Grade: AAA


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 Patek Philippe, Geneva

Model Retailed by Gübelin, Luzern / Lucerne

Reference 4457 / 1

Year Circa 1978

Movement No. 1 397 582

Case No. 2 781 184 (by Les Ateliers Réunis S.A., Geneva)

Bracelet integrated 18K white gold PP bracelet with clasp

Caliber 16-250

Dimensions 26 x 23.7 mm. / Length 140mm. (approx.)

Signature Case, Dial and Movement


“Sigma” dials
In the 1970s, the presence of the two Greek letters “Sigma” on either side of “SWISS” was intended to give a distinctive sign to Swiss-made dials with solid gold hour-indexes. Only members of APRIOR (Association pour la Promotion Industrielle de l’Or) were entitled to use this mark; among them, Patek Philippe, Rolex, Vacheron Constantin, IWC and Omega.