Movement record · Switzerland
Longines Calibre 13ZN
Needs researchA highly regarded pre-war and post-war column-wheel chronograph movement, valued by collectors for its finishing and its flyback function on certain references.
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Watch - Longines (38691655675) — Tim Evanson from Cleveland Heights, Ohio, USA, CC BY-SA 2.0. Wikimedia Commons file page 
Montre Longines "Calibre 13ZN"1944. Numéro de référence 5094... — lot-art.com, Rights unverified — web image search result, review pending. Web page (lot-art.com) 
Longines Calibre 13ZN Flyback Chronograph 18ct Pink Gold 1946/47 ... — vintagegoldwatches.com, Rights unverified — web image search result, review pending. Web page (vintagegoldwatches.com)
Technical specifications
- Diameter
- Approx. 29 mm (13 lignes)
- Height
- Not fully documented in accessible sources
- Jewels
- Approx. 17–19
- Frequency
- 18,000 vph (2.5 Hz)
- Power reserve
- Approx. 36–40 hours
- Winding
- Hand wind
- Setting
- Pull-out crown
- Escapement
- Swiss lever
- Balance
- Bimetallic balance with Breguet overcoil on the finest examples
- Complications
- Column-wheel chronograph, Flyback function on some references
Identification features
- Column-wheel control
- Longines winged-hourglass signature on the bridge
Known variants
- Flyback and non-flyback versions
Servicing notes
Specialist vintage-chronograph servicing recommended; original parts are scarce.
General guidance only. Antique movements should be serviced by a qualified watchmaker.
Historical significance
One of the most collected pre-war chronograph movements, often cited alongside contemporary Universal Genève and Patek Philippe chronograph calibres.
Photographs
Photographs are illustrative examples of the type, not necessarily the exact object described. Verify details against the source file page.
Sources & references
- Longines heritage literature
- Collector references vary on precise technical specification
Where sources disagree, the disagreement is stated rather than resolved silently.