Excelsior Park JB2

	Brand:	Excelsior Park
	Family:	Unknown
	Height:
	Jewels:
	Reserve:	hours
	Frequency:	18,000 A/h
	Winding:	Hand winding
	Diameter:	(18 ligne)
	Complications:	Chronograph, Monopusher Chronograph
	Hands:	30 Minute Chronograph Hand at 3:00, Central 60 Second Chronograph Hand

Distinguishing Technical Characteristics
Hand-Winding Counter-Clockwise Balance Cock Balance at 6:00 Barrel at 7:30
Production:  –
1910s	1920s	1930s	1940s	1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s

Cal. JB2 (and the similar Cal. JB20, JB22, and JB222) was a mass-produced stopwatch movement from Excelsior Park (Jeanneret-Brehm). It was produced in both standard and rattrapante versions and was available with 1/5 or 1/10 second timing. The latter typically featured a 30 second dial. Cal. JB2 was also available in either “815” or “990” versions, with the latter placing the 30 second counter further from the center (9.9 mm rather than 8.15 mm) for use in larger watches.

Cal. JB2 was the same size as the Roskopf Cal. JB3 and JB30 and the “first quality” Cal. JB1, with many watches available with a variety of movement grades. The standard size was 18 ligne, though it was also listed at 19 ligne.