Important Modern & Vintage Timepieces

Geneva, May 10, 2025

LOT 406

ECOLE D'HORLOGERIE GENEVOISE, SWITZERLAND, “PIÈCE ÉCOLE”, MADE BY JEAN MERIER, PATEK PHILIPPE CALIBER, STAINLESS STEEL

CHF 2,000 - 4,000

HKD 19,000 - 38,000 / USD 2,500 - 4,900 / EUR 2,200 - 4,300

A very fine and rare, stainless steel, manual wind open face, watchmaking school chronometer pocket watch, glazed snap-on case-back. Patek Philippe caliber stamped twice with the Seal of Geneva quality mark


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Grading System
Grade: AA

Very good

Case: 3

Good

Movement: 3*

Good

Overhaul recommended, at buyer's expense

Dial: 3-01

Good

HANDS Original

Brand Ecole d'Horlogerie Genevoise, Switzerland

Model “pièce école”

Movement No. 139

Diameter 50 mm.

Caliber 18 jewels, lever escapement, swan-neck micrometer regulator

Signature Dial and movement