Basic (hour-minute) handwound movement with 18 jewels and a total of 117 parts. Hallmark of Geneva certified. Developed in 1952 and presented in 1955 for the brand bicentenary. 9-lignes or 21.05 mm diameter and 1.64 mm thickness - the world's smallest mechanical manual-winding movement.
Last updated 8 Jul 2026Suggest a correction
TECHNICAL SPECIFICATIONS
Movement Type
Manual Winding
Jewel Count
18 jewels
Diameter
21.05mm
Height
1.64mm
Display Type
Analog
Winding
Manual
FEATURES
Hand Winding
QUICK FACTS
BRAND
TYPE
Manual WindingSTATUS
In ProductionMANUFACTURE
In-houseLAUNCH YEAR
1955BASED ON
Jaeger-LeCoultre 839CALIBER FAMILY
10xxCOUNTRY
SwitzerlandALSO KNOWN AS
cal. 1003k 1003
FOR WATCH DEALERS
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