Valjoux 726

	Brand:	Valjoux
	Family:	Valjoux 23/72 Family
	Height:	6.95 mm
	Jewels:	17
	Reserve:	46 hours
	Frequency:	21,600 A/h
	Winding:	Hand winding
	Diameter:	29.50 mm (13 ligne)
	Complications:	9-Column Chronograph, Chronograph, Column Wheel Chronograph
	Hands:	12 Hour Chronograph Hand at 6:00, 30 Minute Chronograph Hand at 3:00, Central 60 Second Chronograph Hand, Central Hour Hand, Central Minute Hand, Small Seconds Hand at 9:00

Distinguishing Technical Characteristics
Hand-Winding Clockwise Balance Cock 9-Column Chronograph Balance Balance at 12:00 Column Wheel Column Wheel at 6:00
Production: 1969 – 1974
1910s	1920s	1930s	1940s	1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s

The Valjoux Cal. 726 is a celebrated hand-winding chronograph movement produced from 1974. A higher-beat replacement for the venerable Valjoux Cal. 72, it operates at 21,600 A/h rather than 18,000 A/h. Cal. 726 was in production in 1974, with some sources suggesting it was introduced as early as 1969.

Valjoux Cal. 726 Functions

Cal. 236 and Cal. 726 are almost identical except that the latter adds a 12 hour counter at 6:00 on the dial.

• Central hours and minute hands and chronograph seconds
• 30 minute counter at 3:00
• 12 hour counter at 6:00
• Running small seconds at 9:00

Valjoux Cal. 726 Applications

The Valjoux 726 was used by many brands, notably including Certina, Enicar, Eterna, Franck Muller, and Longines.

The Valjoux 726 was also used by Rolex and known as Cal. 727. Changes include the use of a Microstella regulator and Rolex finishing, including the initials ROW for “Rolex Werke”.

Valjoux 23/72 Family Movements

The Valjoux Cal. 23/72 family was primarily made up of eight movements, with all others being variations on these. Many components are shared between most or all of these movements, with the main variations happening together over the long production of the series.

• Cal. 23 VZ – Basic movement with no hour counter
• Cal. 72 VZH – Basic movement with hour counter
• Cal. 72c VZHC – Cal. 72 with triple calendar
• Cal. 88 VZHCL – Cal. 72c with moon phase
• Cal. 78 VZSC – Non-chronograph triple calendar
• Cal. 90 VZSCL – Cal. 78 with moon phase
• Cal. 69 DX – Compact 10.5 ligne chronograph
• Cal. 89 DXC – Compact 10.5 ligne triple calendar

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