Valjoux 729

	Brand:	Valjoux
	Family:	Valjoux 23/72 Family
	Height:	6.95 mm
	Jewels:	17
	Reserve:	48 hours
	Frequency:	21,600 A/h
	Winding:	Hand winding
	Diameter:	29.50 mm (13 ligne)
	Complications:	2-Button, 24 Hour Hand, 9-Column Chronograph, Chronograph, Column Wheel Chronograph
	Hands:	12 Hour Chronograph Hand at 6:00, 30 Minute Chronograph Hand at 3:00, Central 24 Hour Hand, 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: 1974 – 1979
1910s	1920s	1930s	1940s	1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s

The Valjoux 729 is a hand-winding chronograph movement with GMT function in the Valjoux 72 family. The GMT function uses a central 24 hour hand that can not be adjusted independently and thus requires a rotating bezel to read. Cal. 729 replaced lower-beat rate Cal. Valjoux 724 around 1974 and was produced through the 1970s, though some sources suggest that it was introduced as early as 1969.

• Central hours and minute hands
• Central chronograph seconds
• Central 24 hour hand
• 30 minute counter at 3:00
• 12 hour counter at 6:00
• Running small seconds at 9:00

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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