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You are here: Home / Movements / Excelsior Park JB11

Excelsior Park JB11

Last Update: December 6, 2022

Brand:Excelsior Park
Family:
Excelsior Park JB1 Family
Height:6.8 mm
Jewels:7
Reserve: hours
Frequency:18,000 A/h
Winding:Hand winding
Diameter:40.0 mm (18 ligne)
  Complications:5-Column Chronograph, Chronograph, Column Wheel Chronograph, Monopusher Chronograph, Rattrapante Chronograph
Hands:30 Minute Chronograph Hand at 3:00, Central Split Second Chronograph Hand
Distinguishing Technical Characteristics
Hand-Winding
Counter-Clockwise Balance Cock
5-Column Chronograph
Balance at 3:00
Barrel at 7:30
Production:  – 
1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s

Cal. JB11 from Excelsior Park was an 18 ligne rattrapante stopwatch movement produced in the 1920s. The crown is used for winding and can house a co-axial button in addition to the button at 11 (with the crown at 12). Excelsior Park made standard (Cal. JB1), and a high-beat (36,000 A/h) version. Internal documents show the movement called “Cal. B” and that it was available in 19, 20, and 22 ligne versions in addition to 18 ligne.

One notable feature of Cal. JB1 is the distinctive J-shaped barrel bridge, a signature of the Jeanneret family of Saint-Imier, though Cal. JB11 lacks the curving bridge and resembles the letter I instead. It also includes the Jeanneret spare parts compartment embedded in the movement next to the balance.

This 1928 ad shows Excelsior Park’s Cal. 1, the spare parts compartment, and variations on the movement.
Images are taken from official publications and are used here for commentary and educational purposes. Copyright is held by the original owner as noted.

Ranfft Pink Pages

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