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The Encyclopedia of Horology

Source catalogue · individual objects

Object Catalogue

Individual objects described by auction houses, specialist dealers and collection catalogues. Attribution, dates and specifications remain source-reported unless independently established; rights clearance is pending.

Browse makers and their key pieces · École d'horlogerie de Genève profile

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Front view of the Technicum Cantonal chronograph pocket watch, showing the dial, subsidiary registers, and the winding crown with integrated push-piece.

Pocket watch · Chronograph & split-seconds watch

Technicum Cantonal Chronograph Pocket Watch

This keyless-winding pocket watch was produced by the Technicum Cantonal, Ecole d'Horlogerie in Bienne/Biel, Switzerland, circa 1930-1940. Housed in a round-shaped stainless steel case with a snap-on case-back, the watch measures 47.9 mm in diameter. It features a manual-winding movement with a lever escapement, built upon an Omega 39 CHRO ebauche dating between 1926 and 1944. The timepiece includes a 1/5 second chronograph, operated by a single round push-piece integrated into the winding-crown, and a dragging 30-minute recorder displayed on a subsidiary dial at 12 o'clock. A second subsidiary dial for continuous running seconds is positioned at 6 o'clock. and reflects the horological output associated with the Bienne/Biel horological school curriculum during the early 20th century, documented in the reference work by Estelle Fallet and Antoine Simonin.

Full description

catalog.antiquorum.swiss · 10

Front view of the Ecole d'Horlogerie Genève pocket watch showing the enamel dial and subsidiary seconds sub-dial.

Pocket watch · Open-face watch

Ecole d'Horlogerie Genève graduate's pocket watch

This Swiss pocket watch is identified as a graduate's work from the École d'horlogerie de Genève (Geneva Watchmaking School). Dated to circa 1940, the watch features a 52 mm silver case with a gold crown, hinge, and shackle, weighing 103 grams. The dial is enamel, featuring Arabic numerals and a subsidiary seconds sub-dial. The timepiece contains a bridge movement with a lever escapement and a Guillaume screw compensation balance. It is noted in the source documentation to bear the Poinçon de Genève hallmark. The watch is classified as a 'Montre École', reflecting the school's historical curriculum where students manufactured, assembled, and regulated complete timepieces independently as part of their training. The auction description reports that the movement is capable of running, although cleaning is recommended for future maintenance.

Full description

www.invaluable.com · 123