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You are here: Home / Families / Excelsior Park JB1 Family

Excelsior Park JB1 Family

Last Update: December 6, 2022

BRANDS: Excelsior Park

Production:  – 
1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s
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Cal. JB1 from Excelsior Park was an 18 ligne 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, rattrapante (Cal. JB11), and addition timing versions of Cal. JB1. A high-beat (36,000 A/h) version was also produced. Internal documents show the movement called “Cal. B” and that it was available in 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. 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.
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Calibre Start Year End Year Jewels Diameter (mm) Height (mm) Complications
Excelsior Park JB1 7 40.0 6.8 5-Column Chronograph, Chronograph, Column Wheel Chronograph, Monopusher Chronograph
Excelsior Park JB11 7 40.0 6.8 5-Column Chronograph, Chronograph, Column Wheel Chronograph, Monopusher Chronograph, Rattrapante Chronograph

Excelsior Park JB1

Excelsior Park JB11

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