JAEGER Le COULTRE 478/C-721, Balance, complete
JAEGER LE COULTRE original Balance complete, sourced from an untouched, factory-original movement. Verified by a WOSTEP-Certified watchmaker.
- Balance staff total height: 3.30 mm, meticulously measured and verified.
- Pivot diameter on both sides: 0.075 mm.
Micro-Tested Geometry: Both upper and lower pivots have been physically measured using a high-precision ICA Feintaster (microcator). The pivots show absolute cencentricity and zero wear, registered at precisely 0.075 mm on both ends. This ultra thin low-friction specification is identical to the observatory-grade standards required for the JLC Geophysics and Vacheron Constantin Cronometre Royal (Cal: 1008).
- Fits JLC cal: 478, 478/C with Parechock (Geophysics variants).
- Fits V&C cal: 454, 1008
The JLC 449 Family:
- 449: 12,5''' sub second.
- 450: 12,5''' center second.
- 452: 12,5''' sub second.
- 463: 12,5''' sub second, same as 449.
- 464: 12,5''' sub second, calendar: day, date, month.
- 468: 12,5''' center second, same as 450.
- 469: 12,5''' sub second, same as 449.
- 478: 12,5''' center second, same as 450 and 468.
- 479: 12,5''' sub second, same as 449, 452, 463, 469.
- 484: 12,5''' sub second, calendar: day, date, month, same as 464.
- 494: 12,5''' sub second, calendar: day, date, month, moon phase.