Valjoux 9 KVR

	Brand:	Valjoux
	Family:	Unknown
	Height:	8.65 mm
	Jewels:	17
	Reserve:	32 hours
	Frequency:	18,000 A/h
	Winding:	Hand winding
	Diameter:	43.0 mm (19 ligne)
	Complications:	6-Column Chronograph, Chronograph, Column Wheel Chronograph, Rattrapante Chronograph
	Hands:	30 Minute Chronograph Hand at 3:00, Central Hour Hand, Central Minute Hand, Central Split Second Chronograph Hand, Small Seconds Hand at 9:00

Distinguishing Technical Characteristics
Hand-Winding Clockwise Balance Cock Swan-Neck Regulator 6-Column Chronograph
Production: 1913 – 1975
1910s	1920s	1930s	1940s	1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s

Valjoux Cal. 9 KVR (“Chronograph Valjoux Rattrapante”) is a pocket watch column wheel chronograph movement. Introduced around 1913, it was updated around 1945 and produced through 1975. It featured a six-column wheel to control the chronograph function. The chronograph used a central rattrapante seconds hand with a 30 minute counter.

The Valjoux 19 ligne family of pocketwatch chronograph movements from Reymond Frères SA of Les Bioux, Switzerland includes many variations. The basic version (5 KVM or 551) uses a single pusher, while Cal. 5 2F has a separate reset pusher. There is also Cal. 9 KVR, with a rattrapante hand, and Cal. 24 KV, a simple timer. Many are commonly called Valjoux Calibre 19”’, as was common at the time.

• Valjoux 5 KVM – Standard version (also called Cal. 551)
• Valjoux 5 2F – Separate reset pusher
• Valjoux 8 KL
• Valjoux 9 KVR – Split seconds (“Rattrapante”)
• Valjoux 24 KV – Timer, split seconds
• Valjoux 555 – Flyback version
• Valjoux 62 KVC – Timer
• Valjoux 75 KVMR – Timer, with forward and reverse function

This is a “lépine” pocketwatch movement, with the small seconds placed on the same axis as the winding crown. In a pocketwatch, this would place the small seconds at 6:00 with the winding crown at 12:00. The image above would show its placement in a wristwatch, with the winding crown at 3:00 and the small seconds at 9:00.